Medicare Enrolled
Dr. Joanna Chan, M.D.
MOHS-Micrographic Surgery Physician · Long Beach, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Chan from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Chan
Dr. Joanna Chan is a mohs-micrographic surgery physician in Long Beach, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chan performed 5,693 Medicare services across 2,569 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chan received a total of $16,899 from 49 pharmaceutical and/or device companies across 416 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in mohs-micrographic surgery physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice
▲ Top 30% volume in CA
$16,899 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,693
Medicare services
Top 30% in CA for mohs-micrographic surgery physician
2,569
Unique beneficiaries
$166
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~300 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Epifix, per square centimeter | 1,095 | $117 | $297 |
| Destruction of precancerous skin growths, 2-14 This procedure involves the removal or destruction of two to fourteen precancerous skin lesions. It is performed to eliminate abnormal skin cells that have the potential to develop into cancer. |
707 | $6 | $16 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
483 | $100 | $282 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 342 | $378 | $949 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
325 | $73 | $200 |
| Skin growth removal and lab exam, 1-5 blocks This procedure involves the removal of a growth from the head, neck, hands, feet, or genitals. The removed tissue is then examined under a microscope in the laboratory. |
316 | $428 | $1,552 |
| Destruction of skin growths (warts/lesions), 1-14 This procedure involves the removal or destruction of one to fourteen skin growths. It is a minor surgical intervention performed on the skin surface. |
287 | $90 | $265 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
249 | $67 | $237 |
| Destruction of precancerous skin growth, 1 Removal of a single precancerous skin growth. This procedure destroys abnormal skin cells to prevent them from developing into cancer. |
235 | $39 | $154 |
| Additional skin growth biopsy Removal of a sample of an additional skin growth for laboratory examination. This code is used for each extra lesion biopsied during the same session. |
202 | $46 | $116 |
| Destruction of 15 or more precancerous skin growths This procedure involves the removal or destruction of fifteen or more precancerous skin lesions. It is performed to treat abnormal skin cells that have the potential to develop into cancer. |
142 | $148 | $389 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
132 | $123 | $365 |
| Skin growth removal and lab exam, 1-5 blocks A procedure to remove a growth from the trunk, arms, or legs and send 1 to 5 tissue samples to a laboratory for microscopic examination. |
115 | $381 | $1,461 |
| Skin substitute graft application, 25 sq cm or less Application of a skin substitute graft to a wound on the face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes. The wound area covered is 25.0 square centimeters or less. |
112 | $134 | $357 |
| Complicated wound repair, 2.6-7.5 cm A complex surgical procedure to close a wound measuring between 2.6 and 7.5 centimeters on areas such as the face, neck, hands, or feet. |
96 | $224 | $1,074 |
| Skin substitute graft application, 25 sq cm or less Application of a skin substitute graft to a wound on the trunk, arms, or legs covering 25 square centimeters or less. |
84 | $98 | $348 |
| Additional Mohs surgery stage with microscopic exam This procedure involves the removal and microscopic examination of an additional stage of tissue from the trunk, arms, or legs. It is performed in stages to ensure complete removal of the growth. |
77 | $365 | $911 |
| Skin graft for scalp, arm, or leg wound, 10.1-30 sq cm This procedure involves repairing a wound on the scalp, arms, or legs by transferring skin from another area to cover the defect. The graft size is between 10.1 and 30.0 square centimeters. |
70 | $770 | $1,948 |
| Skin graft repair, 10.1-30 sq cm A surgical procedure to repair wounds on the forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin. The graft covers an area between 10.1 and 30.0 square centimeters. |
63 | $794 | $2,070 |
| Chemical application to prevent wound tissue regrowth A chemical agent is applied to a wound to inhibit the regrowth of tissue. This procedure focuses on the application of the substance to manage the wound bed. |
61 | $46 | $207 |
| Skin graft repair, 30.1-60.0 sq cm A surgical procedure to repair a wound by transferring skin from one area to another. This code applies to grafts covering an area between 30.1 and 60.0 square centimeters. |
49 | $970 | $2,425 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
41 | $75 | $247 |
| Ear tissue biopsy A procedure to remove a small sample of tissue from the ear for laboratory examination. |
32 | $47 | $222 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
32 | $1 | $2 |
| Complicated wound repair, scalp/arms/legs, 2.6-7.5 cm A complex surgical procedure to close a wound on the scalp, arms, or legs that measures between 2.6 and 7.5 centimeters in length. |
31 | $281 | $975 |
| Full thickness skin graft to nose, ears, eyelids, or lips, 20 sq cm or less A surgical procedure where a full layer of skin is taken from a donor site and transplanted to the nose, ears, eyelids, or lips. The graft covers an area of 20 square centimeters or less. |
30 | $849 | $2,244 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
26 | $2 | $5 |
| Skin growth biopsy, first lesion A minor surgical procedure to remove a small sample of tissue from a skin growth for laboratory examination. |
25 | $135 | $363 |
| Deep chemical peel of the face A procedure that uses a chemical solution to remove the deep layers of skin on the face. |
25 | $448 | $1,213 |
| Complicated wound repair of trunk, 2.6-7.5 cm A surgical procedure to close a complex wound on the trunk that measures between 2.6 and 7.5 centimeters in length. |
24 | $260 | $914 |
| Injection into skin growths, 1-7 A procedure involving the injection of medication into one to seven skin growths. |
23 | $30 | $131 |
| Chemotherapy administration, 1-7 injections This procedure involves the administration of chemotherapy medication through one to seven separate injections. |
23 | $52 | $195 |
| Skin graft repair of eyelid, nose, ear, or lip, 10.1-30 sq cm This procedure involves repairing a wound on the eyelid, nose, ear, or lip by transferring skin from another area. The graft size covered is between 10.1 and 30.0 square centimeters. |
20 | $852 | $2,232 |
| Skin graft repair of eyelid, nose, ear, or lip, 10 sq cm or less A surgical procedure to repair a wound on the eyelid, nose, ear, or lip by transferring a small piece of skin. The transferred skin covers an area of 10 square centimeters or less. |
19 | $658 | $1,722 |
| Shaving of skin growth on face, 0.6-1.0 cm This procedure involves shaving off a skin growth located on the face, ears, eyelids, nose, lips, or mouth. The size of the growth being removed is between 0.6 and 1.0 centimeters. |
18 | $92 | $317 |
| Shaving of skin growth, 1.1-2.0 cm Removal of a skin growth by shaving the surface of the skin. The procedure is performed on the face, ears, eyelids, nose, lips, or mouth and involves a lesion measuring between 1.1 and 2.0 centimeters. |
17 | $124 | $361 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
15 | $47 | $126 |
| Simple drainage of skin abscess A minor procedure to drain a localized collection of pus from the skin. The abscess is opened to allow the fluid to escape and promote healing. |
13 | $80 | $286 |
| Punch biopsy of first skin growth A small, circular piece of skin is removed from a skin growth using a circular blade. The sample is then sent to a laboratory for examination. |
13 | $112 | $293 |
| Surgical removal of skin cancer, 2.1-3.0 cm This procedure involves the surgical excision of a cancerous skin growth located on the body, arms, or legs. The size of the removed tissue measures between 2.1 and 3.0 centimeters. |
12 | $127 | $635 |
| Skin graft repair, 10 sq cm or less A surgical procedure to repair a wound by transferring a small piece of skin to the affected area. The graft covers wounds on the face, neck, hands, feet, or other specified body parts. |
12 | $670 | $1,709 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
1.4% high complexity
11.0% medium
87.7% routine
Industry Payment Transparency
Open Payments through 2024 ↗$16,899
Total received (2018-2024)
Avg $2,414/year across 7 years
Top 8% in CA for mohs-micrographic surgery physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
49
Companies
416
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$14,132 (83.6%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$2,493 (14.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$273 (1.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$5,048
2023
$2,544
2022
$1,724
2021
$2,773
2020
$641
2019
$2,891
2018
$1,278
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Lumenis BE inc
$1,185
Dermavant Sciences, Inc.
$1,059
ABBVIE INC.
$973
E.R. Squibb & Sons, L.L.C.
$390
PFIZER INC.
$269
Regeneron Healthcare Solutions, Inc.
$243
GENZYME CORPORATION
$209
Arcutis Biotherapeutics, Inc.
$196
REVANCE THERAPEUTICS, INC.
$67
Organogenesis Inc.
$53
UCB, Inc.
$52
Boehringer Ingelheim Pharmaceuticals, Inc.
$49
MERZ NORTH AMERICA, INC.
$49
Lilly USA, LLC
$47
LEO Pharma Inc.
$41
Ortho Dermatologics, a division of Bausch Health US, LLC
$38
SUN PHARMACEUTICAL INDUSTRIES INC.
$33
Amgen Inc.
$26
Galderma Laboratories, L.P.
$25
Incyte Corporation
$25
Sumitomo Pharma America, Inc.
$20
Top 3 companies account for 63.7% of 2024 payments
All-time payments by company (2018-2024) ›
GENZYME CORPORATION
$3,395
Lumenis BE inc
$1,185
PFIZER INC.
$1,113
Dermavant Sciences, Inc.
$1,098
ABBVIE INC.
$1,065
Merz North America, Inc.
$976
Allergan Inc.
$907
Ortho Dermatologics, a division of Bausch Health US, LLC
$721
Arcutis Biotherapeutics, Inc.
$602
AbbVie Inc.
$599
E.R. Squibb & Sons, L.L.C.
$583
Almirall LLC
$469
AbbVie, Inc.
$445
Galderma Laboratories, L.P.
$398
Regeneron Healthcare Solutions, Inc.
$378
Janssen Biotech, Inc.
$351
LEO Pharma Inc.
$236
Genentech USA, Inc.
$227
Incyte Corporation
$220
Sun Pharmaceutical Industries Inc.
$191
Lilly USA, LLC
$183
Novartis Pharmaceuticals Corporation
$147
Silk Road Medical, Inc.
$136
UCB, Inc.
$124
Mayne Pharma Inc.
$124
Cook Medical LLC
$120
Bolton Medical Inc
$90
REVANCE THERAPEUTICS, INC.
$67
EPI Health, LLC
$62
Taro Pharmaceuticals USA, Inc.
$55
Organogenesis Inc.
$53
Allergan, Inc.
$49
Boehringer Ingelheim Pharmaceuticals, Inc.
$49
MERZ NORTH AMERICA, INC.
$49
SANOFI-AVENTIS U.S. LLC
$46
Amgen Inc.
$45
Regeneron Pharmaceuticals, Inc.
$45
Biofrontera Inc.
$40
Celgene Corporation
$34
SUN PHARMACEUTICAL INDUSTRIES INC.
$33
Journey Medical Corporation
$30
Misonix Inc
$27
Encore Dermatology Inc.
$25
Novum Pharma, LLC
$25
DERMIRA, INC.
$20
Sumitomo Pharma America, Inc.
$20
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$15
Nabriva Therapeutics, plc
$14
MAYNE PHARMA INC.
$14
Top 3 companies account for 33.7% of all-time payments
Associated products mentioned in payments ›
0.25% · ABSORICA LD · ADBRY · AKLIEF · ALTRENO · APLIGRAF · ARAZLO · Alcortin A · Ameluz · BLU-U · BOTOX · BOTOX COSMETIC · BRYHALI · Bimzelx · CIBINQO · COSENTYX · CYLTEZO · Cabtreo · Ceracade · Cimzia · Cook Medical AAA · DAXXIFY · DERMATITIS - DISEASE · DORYX · DUOBRII · DUPIXENT · EBGLYSS · ELIDEL · ENROUTE Transcarotid Neuroprotection System · ENSTILAR · EPIDUO FORTE · EUCRISA · Erivedge · FINACEA · GEMTESA · Humira · ILUMYA · Impoyz · JUBLIA · Klisyri · LIBTAYO · LITFULO · M22 · ODOMZO (sonidegib) capsules · OPZELURA · ORACEA · Otezla · RINVOQ · SILIQ · SKYRIZI · SPEVIGO · Seysara · Sitavig · Sivextro · Skyrizi · Sotyktu · Stents · TALTZ · TARGRETIN · TOPICORT (desoximetasone) Topical Spray · TREMFYA · Tremfya · ULTRAVATE (halobetasol propionate) lotion · VTAMA · Winlevi · XEOMIN · XIFAXAN · Xeomin · Zoryve
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (84%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 8% for mohs-micrographic surgery physician in CA.
Geographic Context
Mohs-micrographic surgery physicians within 10 mi
40
Per 100K population
0.4
County median income
$87,760
Nearest hospital
MEMORIALCARE LONG BEACH MEDICAL CENTER
1.5 mi
1.5 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Chan is a clinical cardiology specialist, with above-average Medicare volume (top 30% in CA), with low-engagement industry engagement in the top 8% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chan experienced with epifix, per square centimeter?
Based on Medicare claims data, Dr. Chan performed 1,095 epifix, per square centimeter services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Chan receive payments from pharmaceutical companies?
Yes. Dr. Chan received a total of $16,899 from 49 companies across 416 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Chan's costs compare to other mohs-micrographic surgery physicians in Long Beach?
Dr. Chan's average Medicare payment per service is $166. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Chan) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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Industry payments
Pharma Payments to Mohs-Micrographic Surgery Physicians in CA
Which CA mohs-micrographic surgery physicians receive the most from drug and device companies.
By company
GENZYME CORPORATION Payments to Doctors
See all physicians who received payments from GENZYME CORPORATION.
By company
Lumenis BE inc Payments to Doctors
See all physicians who received payments from Lumenis BE inc.
By company
PFIZER INC. Payments to Doctors
See all physicians who received payments from PFIZER INC.
About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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