Ada M. Winkielman, MD
Dermatopathology Physician · Tarzana, CA
Ada M. Winkielman, MD is a dermatopathology physician with a practice address in Tarzana, California, and NPI 1992798870, issued on Aug 25, 2005. Check the license (California A81078, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ada M. Winkielman
- Credential
- MD
- Primary taxonomy
- Dermatopathology Physician 207ND0900X
- License number
- A81078 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18364 Clark St, Tarzana, CA 91356
- Phone
- (818) 345-7122
- Enumerated
- Aug 25, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (818) 345-7448
- Medicare enrollment
- Enrolled (PECOS I20041019001421); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest dermatopathology physician records → All 64 in California → Look up another NPI →
Also registered at 18364 Clark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Gross, MDProcedural Dermatology Physician1396740056
- Charles Linden, MDProcedural Dermatology Physician1508861634
Verify Ada M. Winkielman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81078Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average dermatopathology physician in 2024
267 Medicare Part D claims for 109 beneficiaries, against an average of 693 among the 249 providers of this specialty who prescribed in Part D.
Most prescribed
- Ketoconazole30 claims
- Triamcinolone Acetonide25 claims
- Terbinafine Hcl24 claims
- Clobetasol Propionate23 claims
- Imiquimod23 claims
- Fluocinonide20 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $69.69
2 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 233 providers of this specialty with any payment received $2,984.42 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 2 group practices
- Simi Dermatologic Medical Center, IncSimi Valley, CA
- Valley Dermatologic Medical Group IncTarzana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ada M. Winkielman among 64 dermatopathology physician records in California
Ada M. Winkielman, MD is one of 64 dermatopathology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1990 · median 1995 among the 44 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatopathology Physician providers in California
There are 64 dermatopathology physician records in California.
All 64 in California → Every provider in Tarzana → Dermatopathology Physician nationwide →
The 8 dermatopathology physician records with the nearest ZIP codes
- Edward Young, MDTarzana, CA 913561447324850
- Douglas Hamilton, M.D.Woodland Hills, CA 913671497815880
- Pamela Aubert, M.D.Panorama City, CA 914021821316696
- Michael McLemore, MDBurbank, CA 915051265727333
- Marilyn Mehlmauer, MDPasadena, CA 911051831389964
- Mehran Nowfar-Rad, M.D.Pasadena, CA 911051912979048
- James Esther, M.D.Pasadena, CA 911011932281888
- John Honch, M.D.La Canada, CA 910111134121460
Common questions
What is Ada M. Winkielman, MD's NPI number?
Ada M. Winkielman, MD's National Provider Identifier (NPI) is 1992798870, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ada M. Winkielman, MD located?
The NPPES record lists a practice address at 18364 Clark St, Tarzana, CA, 91356. Phone: (818) 345-7122. Providers update this record themselves, so call before visiting.
How can I verify Ada M. Winkielman, MD's license?
NPPES lists California license number A81078, 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 Ada M. Winkielman, MD prescribe under Medicare Part D?
In 2024, Ada M. Winkielman, MD had 267 Medicare Part D claims for 109 beneficiaries; the average among dermatopathology physician prescribers was 693. Part D covers Medicare prescriptions only.
What is Ada M. Winkielman, MD's MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.