Kathleen Marie Welsh, MD
Dermatology Physician · San Francisco, CA
Kathleen Marie Welsh, MD is a dermatology physician with a practice address in San Francisco, California, and NPI 1851459994, issued on Dec 4, 2006. Check the license (California 659902, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kathleen Marie Welsh
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 659902 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2299 Post St, San Francisco, CA 94115
- Phone
- (415) 292-6350
- Enumerated
- Dec 4, 2006
- Record last updated
- Dec 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (415) 440-6356
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 2299 Post St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathleen Marie Welsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 659902Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average dermatology physician in 2024
277 Medicare Part D claims for 114 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Minoxidil85 claims
- Triamcinolone Acetonide25 claims
- Clobetasol Propionate20 claims
- Doxycycline Hyclate14 claims
- Dupixent Pen13 claims
- Dutasteride12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $5,759.09
21 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Kathleen Marie Welsh among 2,083 dermatology physician records in California
Kathleen Marie Welsh, MD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 56% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2016 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in San Francisco → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Timothy Berger, MDSan Francisco, CA 941151124079181
- Kerry Blacker, MDSan Francisco, CA 941151841378452
- Mary Connolly, MDSan Francisco, CA 941151942265772
- Quita Cruciger, M.D.San Francisco, CA 941151629161245
- Lindy Fox, MDSan Francisco, CA 941151790738953
- Anna Haemel, M.D.San Francisco, CA 941151962448522
- Frank Jonelis, MDSan Francisco, CA 941151245318849
- Mohammed Kashani-Sabet, M.D.San Francisco, CA 941151629026174
Common questions
What is Kathleen Marie Welsh, MD's NPI number?
Kathleen Marie Welsh, MD's National Provider Identifier (NPI) is 1851459994, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Marie Welsh, MD located?
The NPPES record lists a practice address at 2299 Post St, San Francisco, CA, 94115. Phone: (415) 292-6350. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Marie Welsh, MD's license?
NPPES lists California license number 659902, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathleen Marie Welsh, MD prescribe under Medicare Part D?
In 2024, Kathleen Marie Welsh, MD had 277 Medicare Part D claims for 114 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.