NPPES file of Aug 9, 2026

Mark Stengler, N.D.

Naturopath · La Jolla, CA

Mark Stengler, N.D. is a naturopath with a practice address in La Jolla, California, and NPI 1629190004, issued on Apr 4, 2007. Check the license (California ND-39, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629190004
Name
Mark Stengler
Credential
N.D.
Primary taxonomy
Naturopath 175F00000X
License number
ND-39 CA
Self-reported in NPPES; status is on the state search
Practice location
8950 Villa LA Jolla Dr Ste A107, La Jolla, CA 92037
Phone
(858) 450-7120
Enumerated
Apr 4, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(858) 450-7170
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 naturopath records → All 964 in California → Look up another NPI →

Also registered at 8950 Villa LA Jolla Dr Ste A107

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

  1. Steven McCrea, NDNaturopath1861034753

Verify Mark Stengler 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 ND-39    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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18% more Medicare Part D claims than the average naturopath in 2024

129 Medicare Part D claims for 27 beneficiaries, against an average of 109 among the 1,866 providers of this specialty who prescribed in Part D.

  1. Mark Stengler129
  2. Specialty average109

Most prescribed

  1. Armour Thyroid22 claims
  2. Progesterone14 claims
  3. Np Thyroid13 claims
  4. Liothyronine Sodium11 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.

Mark Stengler among 964 naturopath records in California

Mark Stengler, N.D. is one of 964 naturopath records with a practice address in California. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 4% of them.

  • NPI issued2007 · 4% of these records are older, 83% newer
  • In a Medicare fileYes · 26% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 175F00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Naturopath providers in California

There are 964 naturopath records in California.

All 964 in California → Every provider in La Jolla → Naturopath nationwide →

The 8 naturopath records with the nearest ZIP codes

  1. Katelyn Cloyd, NDLa Jolla, CA 920371871072223
  2. Anna FeaganLa Jolla, CA 920371063983831
  3. Leah Gordon, NDLa Jolla, CA 920371396257283
  4. Jessica Greene, ND, DCLa Jolla, CA 920371952743528
  5. Natiya Guin, NDLa Jolla, CA 920371477118941
  6. Bronner Handwerger, N.M.D.La Jolla, CA 920371245397868
  7. Emily Hernandez, N.D.La Jolla, CA 920371811393135
  8. Jonathan Kalman, N.M.D.La Jolla, CA 920371477813384

Common questions

What is Mark Stengler, N.D.'s NPI number?

Mark Stengler, N.D.'s National Provider Identifier (NPI) is 1629190004, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Stengler, N.D. located?

The NPPES record lists a practice address at 8950 Villa LA Jolla Dr Ste A107, La Jolla, CA, 92037. Phone: (858) 450-7120. Providers update this record themselves, so call before visiting.

How can I verify Mark Stengler, N.D.'s license?

NPPES lists California license number ND-39, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Mark Stengler, N.D. prescribe under Medicare Part D?

In 2024, Mark Stengler, N.D. had 129 Medicare Part D claims for 27 beneficiaries; the average among naturopath prescribers was 109. 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.

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.