NPPES file of Aug 9, 2026

Leah Theresa Riha, NP

Nurse Practitioner · Saint Helena, CA

Leah Theresa Riha, NP is a nurse practitioner with a practice address in Saint Helena, California, and NPI 1558629097, issued on May 2, 2012. Check the license (California NP21225, 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
1558629097
Name
Leah Theresa Riha
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
NP21225 CA
Self-reported in NPPES; status is on the state search
Practice location
1222 Pine St Ste A, Saint Helena, CA 94574
Phone
(707) 963-0931
Enumerated
May 2, 2012
Record last updated
Jul 21, 2022
Fax
(707) 254-1779
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 1222 Pine St Ste A

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

  1. Olivia DempsterFamily Nurse Practitioner1265315618
  2. Timothy Dowling, DOFamily Medicine Physician1215946355
  3. Sarah GonzalezRegistered Nurse1760228142
  4. Teresa Shinder, D.O.Pediatrics Physician1427253764
  5. Ramiro Zarate, FNPFamily Nurse Practitioner1669612834

Verify Leah Theresa Riha 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 NP21225
    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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89% fewer Medicare Part D claims than the average nurse practitioner in 2024

127 Medicare Part D claims for 48 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Leah Riha127
  2. Specialty average1,109

Most prescribed

  1. Amlodipine Besylate17 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.

7 nurse practitioner records list a practice address in Saint Helena

They are 7 of the 232 NPPES records with a practice address in Saint Helena, and 8,223 nurse practitioner records in California.

Other nurse practitioner records in California

  1. Barbara Aaronson, RN/NURSE PRACTITONERLos Angeles, CA1588988182
  2. Albert Aba, AGNPSan Francisco, CA1578353777
  3. Martha Ababneh, CNAEl Monte, CA1275118614
  4. Maria Katrina Abad, AGPCNP-BCSan Carlos, CA1306394952
  5. Shayda Abadi, NPPalo Alto, CA1316745540
  6. Jessika Abarca, NPSan Fernando, CA1972263945
  7. Hangama Abassi, N.P.Walnut Creek, CA1487083655
  8. Elizabeth Abaunza, NPSan Francisco, CA1962044347
  9. Honeylynn Abaya, NPMoreno Valley, CA1528799145
  10. Tara Abbondanza, NPArcadia, CA1730355173

Common questions

What is Leah Theresa Riha, NP's NPI number?

Leah Theresa Riha, NP's National Provider Identifier (NPI) is 1558629097, issued on May 2, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Leah Theresa Riha, NP located?

The NPPES record lists a practice address at 1222 Pine St Ste A, Saint Helena, CA, 94574. Phone: (707) 963-0931. Providers update this record themselves, so call before visiting.

How can I verify Leah Theresa Riha, NP's license?

NPPES lists California license number NP21225, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Leah Theresa Riha, NP prescribe under Medicare Part D?

In 2024, Leah Theresa Riha, NP had 127 Medicare Part D claims for 48 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.