Ada Winkielman, MD
Dermatopathology Physician · Tarzana, CA
Ada Winkielman, MD is a dermatopathology physician with a practice address in Tarzana, California, and NPI 1992798870, issued on Aug 25, 2005. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ada Winkielman
- Credential
- MD
- Primary taxonomy
- Dermatopathology Physician 207ND0900X
- Practice location
- 18364 Clark St, Tarzana, CA 91356
- Phone
- (818) 345-7122
- Enumerated
- Aug 25, 2005
- Entity
- Type 1 · individual
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, MDDermatology Physician1396740056
- Charles Linden, MDDermatology Physician1508861634
Verify Ada Winkielman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
62% fewer Medicare Part D claims than the average dermatopathology physician in 2024
267 Medicare Part D claims for 109 beneficiaries, against an average of 695 among the 333 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 Medicare quality score for 2023: 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, mostly food and beverage; the largest payer was Genzyme Corporation. The 284 providers of this specialty with any payment received $3,736.58 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.
2 hospital and facility affiliations
- Simi Dermatologic Medical Center, IncSimi Valley, CA
- Valley Dermatologic Medical Group IncTarzana, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Dermatopathology Physician providers in California
There are 71 dermatopathology physician records in California.
Other dermatopathology physician records in California
- Behnam Abdollahi, MDAnaheim, CA1598836520
- Mahsa Abdollahi, MDLaguna Hills, CA1043445554
- Ronnie Abraham, MDSan Luis Obispo, CA1124254933
- Pamela Aubert, M.D.Panorama City, CA1821316696
- Elizabeth Bailey, MDStanford, CA1992099022
- David Barnette, MDCarlsbad, CA1750372728
- Keira Barr, MDSacramento, CA1346218054
- Ritu Batra, MD MPHSanta Monica, CA1356441869
- William Brokken, M.D.Santa Barbara, CA1336140284
- Brook Brouha, MD/PHDLa Jolla, CA1114173937
Common questions
What is Ada Winkielman, MD's NPI number?
Ada 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 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 Winkielman, MD's license?
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 Winkielman, MD prescribe under Medicare Part D?
In 2024, Ada Winkielman, MD had 267 Medicare Part D claims for 109 beneficiaries; the average among dermatopathology physician prescribers was 695. Part D covers Medicare prescriptions only.
What is Ada Winkielman, MD's Medicare quality 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.