NPPES file of Aug 9, 2026

Kathryn M. Tenney, ND

Naturopath · Mill Valley, CA

Kathryn M. Tenney, ND is a naturopath with a practice address in Mill Valley, California, and NPI 1760632467, issued on Sep 30, 2008. Check the license (California ND-442F, 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
1760632467
Name
Kathryn M. Tenney
Credential
ND
Primary taxonomy
Naturopath 175F00000X
License number
ND-442F CA
Self-reported in NPPES; status is on the state search
Practice location
125 Throckmorton Ave, Mill Valley, CA 94941
Phone
(415) 388-5520
Enumerated
Sep 30, 2008
Record last updated
May 29, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(415) 388-5503
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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Also registered at 125 Throckmorton Ave

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

  1. Sara Gottfried, MDGynecology Physician1447320262
  2. Mark Iwanicki, NDNaturopath1780136192
  3. Drew Sinatra, NMD, LACNaturopath1679712392
  4. Vanessa Vertin, PH.D., LMFT, M.A.Marriage & Family Therapist1881355493

Verify Kathryn M. Tenney 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-442F
    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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2.8 times the Medicare Part D claims of the average naturopath in 2024

303 Medicare Part D claims for 30 beneficiaries, against an average of 109 among the 1,866 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Kathryn Tenney303
  2. Specialty average109

Most prescribed

  1. Levothyroxine Sodium57 claims
  2. Progesterone49 claims
  3. Liothyronine Sodium26 claims
  4. Estradiol (Twice Weekly)24 claims
  5. Gabapentin14 claims
  6. Valacyclovir14 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.

Kathryn M. Tenney among 964 naturopath records in California

Kathryn M. Tenney, ND 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 2008, is newer than 17% of them.

  • NPI issued2008 · 17% of these records are older, 78% 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 updated2013 · 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).

16 naturopath records list a practice address in Mill Valley

They are 16 of the 653 NPPES records with a practice address in Mill Valley, and 964 naturopath records in California.

The 8 naturopath records with the nearest ZIP codes

  1. Lisa Brent, N.D.Mill Valley, CA 949411730374224
  2. Brooke Campbell, NDMill Valley, CA 949411871250415
  3. Agatha Constance, NDMill Valley, CA 949411356676001
  4. Christy Guzman, N.D., EAMPMill Valley, CA 949411750681995
  5. Mark Iwanicki, NDMill Valley, CA 949411780136192
  6. Susie Krolicki, N.D.Mill Valley, CA 949411831526136
  7. Elizabeth LargeMill Valley, CA 949411518912989
  8. Tabitha Lowry, NDMill Valley, CA 949411417592031

Common questions

What is Kathryn M. Tenney, ND's NPI number?

Kathryn M. Tenney, ND's National Provider Identifier (NPI) is 1760632467, issued on Sep 30, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn M. Tenney, ND located?

The NPPES record lists a practice address at 125 Throckmorton Ave, Mill Valley, CA, 94941. Phone: (415) 388-5520. Providers update this record themselves, so call before visiting.

How can I verify Kathryn M. Tenney, ND's license?

NPPES lists California license number ND-442F, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Kathryn M. Tenney, ND prescribe under Medicare Part D?

In 2024, Kathryn M. Tenney, ND had 303 Medicare Part D claims for 30 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.

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.