Maya Firsowicz, MD
Dermatology Physician · La Mesa, CA
Maya Firsowicz, MD is a dermatology physician with a practice address in La Mesa, California, and NPI 1194353631, issued on Mar 30, 2020. Check the license (California A195623, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maya Firsowicz
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A195623 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8860 Center Dr Ste 300, La Mesa, CA 91942
- Phone
- (619) 462-1670
- Enumerated
- Mar 30, 2020
- Record last updated
- May 28, 2026
- Fax
- (619) 462-3209
- Medicare enrollment
- Enrolled (PECOS I20260520003866); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 8860 Center Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sam Khalifian, MDProcedural Dermatology Physician1174926190
- Kira Tellache, PHYSICIAN ASSISTANTPhysician Assistant1104441021
Verify Maya Firsowicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A195623Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average dermatology physician in 2024
33 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Ketoconazole13 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: $96.27
1 payment: 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.
Bills Medicare through one group practice
- Grossmont Dermatology Medical ClinicLa Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maya Firsowicz among 2,083 dermatology physician records in California
Maya Firsowicz, 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 2020, is newer than 92% of them.
- NPI issued2020 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2020 · median 2006 among the 1,450 with a school on file
- Record last updated2026 · 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 La Mesa → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Robert BushmanLa Mesa, CA 919421578561692
- Tina Chen, M.D.La Mesa, CA 919421073759627
- Katherine Clyman, M.D.La Mesa, CA 919421497789747
- Jerome Eisman, M.D.La Mesa, CA 919421629006226
- Maki GoskowiczLa Mesa, CA 919421821096942
- Stephan Kempiak, M.D,PH.DLa Mesa, CA 919421215136221
- Brian Kleker, M.D.La Mesa, CA 919421205091170
- Tamara Schnurr, MDLa Mesa, CA 919421336110816
Common questions
What is Maya Firsowicz, MD's NPI number?
Maya Firsowicz, MD's National Provider Identifier (NPI) is 1194353631, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Maya Firsowicz, MD located?
The NPPES record lists a practice address at 8860 Center Dr Ste 300, La Mesa, CA, 91942. Phone: (619) 462-1670. Providers update this record themselves, so call before visiting.
How can I verify Maya Firsowicz, MD's license?
NPPES lists California license number A195623, 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 Maya Firsowicz, MD prescribe under Medicare Part D?
In 2024, Maya Firsowicz, MD had 33 Medicare Part D claims; 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.