NPPES file of Aug 9, 2026

Mark Wellisch, M.D.

Sports Medicine (Orthopaedic Surgery) Physician · Encino, CA

Mark Wellisch, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Encino, California, and NPI 1982685996, issued on Nov 7, 2005. Check the license (California A23373, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1982685996
Name
Mark Wellisch
Credential
M.D.
Primary taxonomy
Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
License number
A23373 CA
Self-reported in NPPES; status is on the state search
Practice location
16311 Ventura Blvd, Encino, CA 91436
Phone
(818) 788-7343
Enumerated
Nov 7, 2005
Record last updated
Jul 13, 2026
Fax
(818) 788-9453
Medicaid ID
00A233730 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →

Also registered at 16311 Ventura Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Aizuss, M.D.Ophthalmology Physician1346221728
  2. Tiffani Bresnick, LCSWClinical Social Worker1083340467
  3. Norman Brooks, MDDermatology Physician1508960667
  4. Bijan Broukhim, M.D.Specialist1376584698
  5. Ricardo Campbell, P.A.Physician Assistant1811978828
  6. Maury Carlin, PH.D.Clinical Psychologist1427089358

Verify Mark Wellisch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A23373    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark Wellisch among 384 sports medicine (orthopaedic surgery) physician records in California

Mark Wellisch, M.D. is one of 384 sports medicine (orthopaedic surgery) physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 93% newer
  • In a Medicare fileNo · 88% of these records are
  • In the CMS Doctors and Clinicians fileNo · 76% of these records are
  • Record last updated2026 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sports Medicine (Orthopaedic Surgery) Physician providers in California

There are 384 sports medicine (orthopaedic surgery) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 384 in California → Every provider in Encino → Sports Medicine (Orthopaedic Surgery) Physician nationwide →

The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes

  1. Dennis Ainbinder, M.D.Encino, CA 914361124394424
  2. Allison Blumenthal, D.O.Van Nuys, CA 914051457733784
  3. Wilson Del Pizzo, M.D.Van Nuys, CA 914051124054788
  4. Connor DelmanVan Nuys, CA 914051710351077
  5. Richard Ferkel, M.D.Van Nuys, CA 914051831128230
  6. Marc Friedman, M.D.Van Nuys, CA 914051154351625
  7. Mark Getelman, M.D.Van Nuys, CA 914051275569832
  8. Ronald Karzel, M.D.Van Nuys, CA 914051710922356

Common questions

What is Mark Wellisch, M.D.'s NPI number?

Mark Wellisch, M.D.'s National Provider Identifier (NPI) is 1982685996, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark Wellisch, M.D. located?

The NPPES record lists a practice address at 16311 Ventura Blvd, Encino, CA, 91436. Phone: (818) 788-7343. Providers update this record themselves, so call before visiting.

How can I verify Mark Wellisch, M.D.'s license?

NPPES lists California license number A23373, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.