NPPES file of Aug 9, 2026

Mark Ingram Ryder, DMD

Periodontics · San Francisco, CA

Mark Ingram Ryder, DMD is a periodontics with a practice address in San Francisco, California, and NPI 1922187020, issued on Nov 2, 2006. Check the license (California CA51446, as entered in NPPES) with the California board that licenses this profession; 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
1922187020
Name
Mark Ingram Ryder
Credential
DMD
Primary taxonomy
Periodontics 1223P0300X
License number
CA51446 CA
Self-reported in NPPES; status is on the state search
Practice location
521 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 476-1699
Enumerated
Nov 2, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(415) 502-4990
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 periodontics records → All 929 in California → Look up another NPI →

Also registered at 521 Parnassus Ave

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

  1. Igor Abramovich, MD, PHDAnesthesiology Physician1255122107
  2. Jackson Adams, MDAnesthesiology Physician1083237846
  3. Dieter AdelmannAnesthesiology Physician1417322835
  4. Emily Ager, MD, MPHEmergency Medicine Physician1770105405
  5. Christopher Allen, MDAnesthesiology Physician1871234773
  6. Daniela Arango Isaza, MDHospitalist Physician1427722990

Verify Mark Ingram Ryder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license CA51446    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
Find the California license search

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Mark Ingram Ryder among 929 periodontics records in California

Mark Ingram Ryder, DMD is one of 929 periodontics records with a practice address in California. 69% 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 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 71% newer
  • In a Medicare fileNo · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 78% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Periodontics providers in California

There are 929 periodontics records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 929 in California → Every provider in San Francisco → Periodontics nationwide →

The 8 periodontics records with the nearest ZIP codes

  1. Hoorshad Fathi-Kelly, DDSSan Francisco, CA 941431821751611
  2. Justine HaiSan Francisco, CA 941431710433750
  3. April MartinezSan Francisco, CA 941431992685010
  4. Fatemeh Momen Heravi, DDS, PHD, MPH, MSSan Francisco, CA 941431366924649
  5. Connie Oh, D.D.S.San Francisco, CA 941431326393547
  6. Yogalakshmi Rajendran, BDS, MSSan Francisco, CA 941431740722560
  7. Shanne Sastiel, DDSSan Francisco, CA 941431881079507
  8. Helena VietsSan Francisco, CA 941431821757576

Common questions

What is Mark Ingram Ryder, DMD's NPI number?

Mark Ingram Ryder, DMD's National Provider Identifier (NPI) is 1922187020, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Ingram Ryder, DMD located?

The NPPES record lists a practice address at 521 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-1699. Providers update this record themselves, so call before visiting.

How can I verify Mark Ingram Ryder, DMD's license?

NPPES lists California license number CA51446, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.