Medicare Enrolled
Dr. Anne Zhuang, M.D.
MOHS-Micrographic Surgery Physician · Mill Valley, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Zhuang 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. Zhuang
Dr. Anne Zhuang is a mohs-micrographic surgery physician in Mill Valley, CA, with 14 years of NPI registration. Based on federal Medicare data, Dr. Zhuang performed 888 Medicare services across 747 unique beneficiaries.
Between the years covered by Open Payments, Dr. Zhuang received a total of $2,934 from 29 pharmaceutical and/or device companies across 115 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. Zhuang 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.
✓ 14 years in practice
▲ 888 Medicare services
$2,934 industry payments
Medicare Practice Summary
Medicare Utilization ↗888
Medicare services
Bottom 12% in CA for mohs-micrographic surgery physician
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
747
Unique beneficiaries
$371
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~63 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 |
|---|---|---|---|
| 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. |
274 | $550 | $1,690 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 201 | $397 | $1,038 |
| 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. |
56 | $52 | $136 |
| 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. |
45 | $243 | $1,192 |
| 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. |
38 | $242 | $1,088 |
| 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. |
31 | $566 | $1,593 |
| Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm | 27 | $156 | $792 |
| 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. |
25 | $890 | $2,421 |
| Complex repair of eyelid, nose, ear, or lip wound, 2.6-7.5 cm A surgical procedure to repair a complex wound on the eyelid, nose, ear, or lip that measures between 2.6 and 7.5 centimeters. |
24 | $218 | $1,249 |
| Intermediate wound repair, 2.6-7.5 cm A medical procedure to close a wound on the scalp, underarms, trunk, arms, or legs that measures between 2.6 and 7.5 centimeters. This type of repair involves cleaning the wound and stitching it closed to promote healing. |
23 | $241 | $780 |
| Complex repair of eyelid, nose, ear, or lip wound, 1.1-2.5 cm A surgical procedure to repair a complex wound on the eyelid, nose, ear, or lip that measures between 1.1 and 2.5 centimeters. |
20 | $220 | $1,065 |
| 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. |
20 | $84 | $217 |
| Intermediate wound repair, face or mouth, 2.5 cm or less A medical procedure to close a wound on the face, ears, eyelids, nose, lips, or mouth that is 2.5 centimeters or smaller. This type of repair involves more than simple closure but is less complex than a major repair. |
15 | $153 | $718 |
| 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. |
14 | $140 | $619 |
| 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. |
14 | $53 | $165 |
| Tissue staining for diagnosis, initial A laboratory test where special stains are applied to tissue slides to help examine the cells and identify specific characteristics. |
13 | $103 | $388 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
12 | $72 | $268 |
| 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 | $149 | $697 |
| Intermediate wound repair, 2.6-7.5 cm This procedure involves stitching a wound on the neck, hands, feet, or genitals that measures between 2.6 and 7.5 centimeters. It is classified as an intermediate repair requiring layered closure. |
12 | $153 | $781 |
| 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. |
12 | $383 | $996 |
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
1.4% medium
97.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$2,934
Total received (2018-2024)
Avg $419/year across 7 years
Top 43% in CA for mohs-micrographic surgery physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
29
Companies
115
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
$2,934 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$349
2023
$360
2022
$21
2021
$110
2020
$479
2019
$656
2018
$960
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$137
Lilly USA, LLC
$87
Biofrontera Inc.
$29
E.R. Squibb & Sons, L.L.C.
$26
Dermavant Sciences, Inc.
$24
Galderma Laboratories, L.P.
$23
Amgen Inc.
$23
Top 3 companies account for 72.4% of 2024 payments
All-time payments by company (2018-2024) ›
Ortho Dermatologics, a division of Bausch Health US, LLC
$273
Allergan Inc.
$271
Galderma Laboratories, L.P.
$269
AbbVie Inc.
$221
Lilly USA, LLC
$202
AbbVie, Inc.
$177
Janssen Biotech, Inc.
$166
ABBVIE INC.
$137
Janssen Scientific Affairs, LLC
$125
Allergan, Inc.
$124
Merz North America, Inc.
$108
MERZ NORTH AMERICA, INC.
$103
PFIZER INC.
$98
Sientra, Inc.
$69
Sun Pharmaceutical Industries Inc.
$61
Regeneron Healthcare Solutions, Inc.
$59
VYNE Pharmaceuticals Inc.
$54
Biofrontera Inc.
$53
Smith+Nephew, Inc.
$52
Endo Pharmaceuticals Inc.
$50
Novartis Pharmaceuticals Corporation
$46
LEO Pharma Inc.
$45
E.R. Squibb & Sons, L.L.C.
$41
Dermavant Sciences, Inc.
$24
DERMIRA, INC.
$23
GlaxoSmithKline, LLC.
$23
Amgen Inc.
$23
Solta Medical, a division of Bausch Health US, LLC
$20
Encore Dermatology Inc.
$17
Top 3 companies account for 27.7% of all-time payments
Associated products mentioned in payments ›
ABSORICA LD · AMELUZ · AMZEEQ · Ameluz · BIAFINE · BOTOX · BOTOX COSMETIC · BRYHALI · CIBINQO · COLLAGENASE SANTYL · COSENTYX · DUOBRII · DUPIXENT · DUPIXENT DUPILUMAB INJECTION · ELIDEL · EPIDUO FORTE · EUCRISA · GRAFIX PL · HUMIRA · Humira · ILUMYA · Impoyz · ONEXTON · Otezla · PICATO · QBREXZA · REMICADE · RETIN-A-MICRO · SHINGRIX · SIENTRA HIGH STRENGTH COHESIVE SILICONE GEL BREAST IMPLANT · SILIQ · SKYRIZI · Sotyktu · TALTZ · TREMFYA · Tremfya · VTAMA · XEOMIN
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Mohs-micrographic surgery physicians within 10 mi
9
Per 100K population
3.5
County median income
$142,785
Nearest hospital
MARINHEALTH MEDICAL CENTER
3.1 mi
3.1 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. Zhuang is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Zhuang experienced with skin growth removal and lab exam, 1-5 blocks?
Based on Medicare claims data, Dr. Zhuang performed 274 skin growth removal and lab exam, 1-5 blocks 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. Zhuang receive payments from pharmaceutical companies?
Yes. Dr. Zhuang received a total of $2,934 from 29 companies across 115 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. Zhuang's costs compare to other mohs-micrographic surgery physicians in Mill Valley?
Dr. Zhuang's average Medicare payment per service is $371. 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. Zhuang) 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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