Michael Karls, PAC
NPI 1801804737 · Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Karls, PAC is a Physician Assistant provider in San Francisco, CA (NPI 1801804737).
Provider details
- NPI number
- 1801804737
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Male
- Sole proprietor
- No
- License
- PA17789 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,324 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 550 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 251 | $92 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 152 | $53 |
| Destruction of Skin Growth, 1-14 Growths17110 | 119 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $131 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clobetasol Propionate | 98 | 48 |
| Ciclopirox Olaminebrand: Ciclopirox | 44 | 34 |
| Desonide | 37 | 28 |
| Triamcinolone Acetonide | 29 | 21 |
| Mupirocin | 27 | 26 |
| Minoxidil | 23 | — |
| Fluorouracil | 11 | 11 |
| Tavaborole | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,283 across 178 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2007-07-25
Frequently asked questions
- What is Michael Karls's NPI number?
- Michael Karls's National Provider Identifier (NPI) is 1801804737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Karls's specialty?
- Michael Karls is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Karls located?
- Michael Karls's practice location on file with NPPES is 45 Castro St, San Francisco, CA 94114-1010.
- What is Michael Karls's phone number?
- The practice phone number listed in the NPPES registry for Michael Karls is (415) 861-8627.
- Does Michael Karls accept Medicare?
- Michael Karls is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Karls's NPI active?
- Yes — Michael Karls's NPI (1801804737) is active in the NPPES registry as of the last update on 2007-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.