NPPES file of Aug 9, 2026

Katherine Aldrich, NP

Adult Health Nurse Practitioner · Santa Rosa, CA

Katherine Aldrich, NP is an adult health nurse practitioner with a practice address in Santa Rosa, California, and NPI 1194995563, issued on Mar 2, 2008. Check the license (California 270798, 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
1194995563
Name
Katherine Aldrich
Credential
NP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
270798 CA
Self-reported in NPPES; status is on the state search
Practice location
1165 Montgomery Dr, Santa Rosa, CA 95405
Phone
(707) 547-5471
Enumerated
Mar 2, 2008
Record last updated
Nov 30, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20161003000441); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest adult health nurse practitioner records → All 1,405 in California → Look up another NPI →

Also registered at 1165 Montgomery Dr

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

  1. Maryam Aghighi, MDAnatomic Pathology & Clinical Pathology Physician1073074977
  2. Johnathan Agil, MDEmergency Medicine Physician1700413002
  3. Mujeeb Altaf, MBBS.,MRCP(UK)Hospitalist Physician1316125941
  4. Rebecca Althoff, RNFARegistered Nurse First Assistant1427119668
  5. Sanyogeeta Bhaway, M.D.Internal Medicine Physician1275828162
  6. Kate Black, MDPain Medicine (Anesthesiology) Physician1023068574

Verify Katherine Aldrich 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 270798    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

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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95% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024

68 Medicare Part D claims for 20 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.

  1. Katherine Aldrich68
  2. Specialty average1,280

Most prescribed

  1. Furosemide11 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.

Industry payments in 2024: $103.96

1 payment: food and beverage; the largest payer was Abbvie Inc. The 12,291 providers of this specialty with any payment received $946.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katherine Aldrich$103.96
  2. Specialty average$946.40

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Providence Medical FoundationSanta Rosa, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katherine Aldrich among 1,405 adult health nurse practitioner records in California

Katherine Aldrich, NP is one of 1,405 adult health nurse practitioner records with a practice address in California. 56% 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 30% of them.

  • NPI issued2008 · 30% of these records are older, 66% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 31% of these records are
  • Graduated1997 · median 2013 among the 441 with a school on file
  • Record last updated2020 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in California

There are 1,405 adult health nurse practitioner records in California.

All 1,405 in California → Every provider in Santa Rosa → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Sarah Chow, NP, MHSSanta Rosa, CA 954051447557525
  2. Laura Cosenza, CNPSanta Rosa, CA 954051376852467
  3. Maija Kulp, APRNSanta Rosa, CA 954051427396068
  4. Thomas Young, PHD, NPSanta Rosa, CA 954041689797029
  5. Laura Berke, RN, FNPSanta Rosa, CA 954031306923602
  6. Helen Effron, N.P.Santa Rosa, CA 954031619083920
  7. Toni McFadden, CNPSanta Rosa, CA 954031205859311
  8. Joseph Smihula, NPSanta Rosa, CA 954031154421873

Common questions

What is Katherine Aldrich, NP's NPI number?

Katherine Aldrich, NP's National Provider Identifier (NPI) is 1194995563, issued on Mar 2, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Aldrich, NP located?

The NPPES record lists a practice address at 1165 Montgomery Dr, Santa Rosa, CA, 95405. Phone: (707) 547-5471. Providers update this record themselves, so call before visiting.

How can I verify Katherine Aldrich, NP's license?

NPPES lists California license number 270798, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Katherine Aldrich, NP prescribe under Medicare Part D?

In 2024, Katherine Aldrich, NP had 68 Medicare Part D claims for 20 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.