Medicare Enrolled
Dr. Jay Zimmerman, M.D.
Dermatology · Walnut Creek, 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. Zimmerman 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. Zimmerman
Dr. Jay Zimmerman is a dermatology specialist in Walnut Creek, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Zimmerman performed 8,591 Medicare services across 4,149 unique beneficiaries.
Between the years covered by Open Payments, Dr. Zimmerman received a total of $8,283 from 33 pharmaceutical and/or device companies across 401 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in dermatology. 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. Zimmerman 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 11% volume in CA
$8,283 industry payments
Medicare Practice Summary
Medicare Utilization ↗8,591
Medicare services
Top 11% in CA for dermatology
4,149
Unique beneficiaries
$63
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~452 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 |
|---|---|---|---|
| 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. |
3,499 | $7 | $17 |
| 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. |
1,202 | $76 | $217 |
| 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. |
749 | $53 | $165 |
| 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. |
703 | $104 | $306 |
| 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. |
536 | $165 | $418 |
| 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. |
352 | $108 | $293 |
| UV therapy with tar or petroleum jelly A treatment using ultraviolet radiation combined with the application of tar or petroleum jelly to the skin. |
282 | $129 | $409 |
| 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. |
193 | $87 | $265 |
| 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. |
108 | $141 | $392 |
| Shaving of skin growth, 0.6-1.0 cm A minor procedure to shave off a skin growth on the body, arms, or legs that measures between 0.6 and 1.0 centimeters. |
96 | $109 | $318 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
88 | $13 | $34 |
| 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. |
87 | $52 | $136 |
| Shaving of skin growth, 1.1-2.0 cm This procedure involves shaving off a skin growth measuring between 1.1 and 2.0 centimeters from the body, arms, or legs. |
74 | $135 | $363 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
73 | $1 | $10 |
| 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. |
70 | $129 | $355 |
| Topical aminolevulinic acid HCl 20% solution A topical medication applied to the skin for medical treatment. It is supplied as a single-unit dosage form containing 354 mg of the active ingredient. |
56 | $287 | $781 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
54 | $89 | $268 |
| Surgical removal of skin cancer, 1.1-2.0 cm Surgical excision of a cancerous skin growth measuring between 1.1 and 2.0 centimeters on the body, arms, or legs. |
49 | $127 | $619 |
| Shaving of skin growth, 0.6-1.0 cm A minor procedure to shave off a skin growth measuring 0.6 to 1.0 cm from the scalp, neck, hands, feet, or genitals. |
46 | $115 | $319 |
| New patient office visit, 15-29 minutes An initial office visit for a new patient lasting 15 to 29 minutes. This code is used when the total time spent on the date of the encounter meets this duration threshold. |
42 | $62 | $175 |
| Shaving of skin growth, 1.1-2.0 cm Removal of a skin growth by shaving the surface. The procedure is performed on the scalp, neck, hands, feet, or genitals and involves a lesion measuring between 1.1 and 2.0 centimeters. |
35 | $135 | $367 |
| Shaving of small skin growth on face or mouth area A minor procedure to shave off a small skin growth, measuring 0.5 cm or less, located on the face, ears, eyelids, nose, lips, or mouth. |
35 | $95 | $304 |
| Light application with debridement to destroy precancerous skin growth This procedure involves applying light to the skin along with debridement to destroy precancerous skin growths. |
34 | $304 | $767 |
| 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. |
28 | $422 | $1,088 |
| 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. |
23 | $398 | $1,022 |
| Ear tissue biopsy A procedure to remove a small sample of tissue from the ear for laboratory examination. |
17 | $87 | $250 |
| Light therapy to destroy precancerous skin growth This procedure uses light to treat and remove precancerous skin lesions. It is a method for destroying abnormal skin cells before they become cancerous. |
17 | $156 | $394 |
| Destruction of skin growth, 15 or more growths | 16 | $133 | $339 |
| 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. |
15 | $160 | $405 |
| Skin growth shaving, 0.5 cm or less This procedure involves shaving off a small skin growth measuring 0.5 centimeters or less from the body, arms, or legs. |
12 | $66 | $267 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$8,283
Total received (2018-2024)
Avg $1,183/year across 7 years
Top 20% in CA for dermatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
401
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
$8,052 (97.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$231 (2.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,043
2023
$2,085
2022
$1,169
2021
$434
2020
$170
2019
$628
2018
$754
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$678
Lilly USA, LLC
$615
Novartis Pharmaceuticals Corporation
$324
GENZYME CORPORATION
$227
Janssen Biotech, Inc.
$225
Incyte Corporation
$214
Dermavant Sciences, Inc.
$122
E.R. Squibb & Sons, L.L.C.
$114
Regeneron Healthcare Solutions, Inc.
$102
Biofrontera Inc.
$78
Ortho Dermatologics, a division of Bausch Health US, LLC
$72
UCB, Inc.
$70
Arcutis Biotherapeutics, Inc.
$67
Galderma Laboratories, L.P.
$55
PFIZER INC.
$53
LEO Pharma Inc.
$28
Top 3 companies account for 53.1% of 2024 payments
All-time payments by company (2018-2024) ›
ABBVIE INC.
$1,119
Lilly USA, LLC
$1,074
AbbVie Inc.
$829
Novartis Pharmaceuticals Corporation
$734
Janssen Biotech, Inc.
$647
Incyte Corporation
$382
Dermavant Sciences, Inc.
$363
E.R. Squibb & Sons, L.L.C.
$343
GENZYME CORPORATION
$330
PFIZER INC.
$292
Regeneron Healthcare Solutions, Inc.
$273
Merz North America, Inc.
$235
UCB, Inc.
$189
LEO Pharma Inc.
$161
Amgen Inc.
$155
Galderma Laboratories, L.P.
$142
Ortho Dermatologics, a division of Bausch Health US, LLC
$131
Biofrontera Inc.
$125
Mayne Pharma Inc.
$123
Arcutis Biotherapeutics, Inc.
$112
Genentech USA, Inc.
$109
Allergan, Inc.
$95
AbbVie, Inc.
$62
Sun Pharmaceutical Industries Inc.
$53
Pierre Fabre Pharmaceuticals, Inc.
$43
Allergan Inc.
$42
Fresenius Kabi USA, LLC
$31
Janssen Scientific Affairs, LLC
$25
DUSA Pharmaceuticals, Inc.
$15
Celgene Corporation
$15
EPI Health, LLC
$13
MERZ NORTH AMERICA, INC.
$13
SUN PHARMACEUTICAL INDUSTRIES INC.
$12
Top 3 companies account for 36.5% of all-time payments
Associated products mentioned in payments ›
20% · ADBRY · AKLIEF · AMELUZ · Absorica LD · Ameluz · BOTOX · BOTOX COSMETIC · Bimzelx · CIBINQO · CLODERM · COSENTYX · Cimzia · DORYX · DUPIXENT · EBGLYSS · ENSTILAR · EPIDUO FORTE · EUCRISA · Enbrel · Erivedge · HUMIRA · Humira · IDACIO · ILUMYA · JUBLIA · Levulan Kerastick (aminolevulinic acid HCl) for Topical Solution · OLUMIANT · OPZELURA · Otezla · REMICADE · RINVOQ · SILIQ · SKYRIZI · Skyrizi · Sotyktu · TALTZ · TREMFYA · Tremfya · VTAMA · Winlevi · 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 (97%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Dermatologists within 10 mi
215
Per 100K population
18.5
County median income
$125,727
Nearest hospital
JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS
0.0 mi
0.0 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. Zimmerman is a clinical cardiology specialist, with above-average Medicare volume (top 11% in CA), with low-engagement industry engagement in the top 20% 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. Zimmerman experienced with destruction of precancerous skin growths, 2-14?
Based on Medicare claims data, Dr. Zimmerman performed 3,499 destruction of precancerous skin growths, 2-14 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. Zimmerman receive payments from pharmaceutical companies?
Yes. Dr. Zimmerman received a total of $8,283 from 33 companies across 401 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. Zimmerman's costs compare to other dermatologists in Walnut Creek?
Dr. Zimmerman's average Medicare payment per service is $63. 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. Zimmerman) 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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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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