NPPES file of Aug 9, 2026

Susan Dyer Claydon, N.P.

Family Nurse Practitioner · Grass Valley, CA

Susan Dyer Claydon, N.P. is a family nurse practitioner with a practice address in Grass Valley, California, and NPI 1336147057, issued on Jul 7, 2005. Check the license (California 305917, 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
1336147057
Name
Susan Dyer Claydon
Credential
N.P.
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
305917 CA
Self-reported in NPPES; status is on the state search
Practice location
150 Catherine LN, Grass Valley, CA 95945
Phone
(530) 271-2100
Enumerated
Jul 7, 2005
Record last updated
Jul 12, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(530) 271-2200
Medicare enrollment
Enrolled (PECOS I20070515000666); 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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Also registered at 150 Catherine LN

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

  1. Simon Chan, M.D.Internal Medicine Physician1063431179
  2. Christopher Claydon, M.D.Geriatric Medicine (Family Medicine) Physician1518965235
  3. Ruth Cutter, N.P.Family Nurse Practitioner1033232012
  4. Gwendolyn Eymann, RN-NPCommunity Health Nurse Practitioner1730392184
  5. Daniel Greenberg, LACAcupuncturist1861868226
  6. Nelson Maldonado, M.D.Surgery Physician1508921305

Verify Susan Dyer Claydon 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 305917
    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
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2.2 times the Medicare Part D claims of the average family nurse practitioner in 2024

2,903 Medicare Part D claims for 104 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 189 claims were for opioids.

  1. Susan Claydon2,903
  2. Specialty average1,305

Most prescribed

  1. Levothyroxine Sodium146 claims
  2. Metoprolol Succinate101 claims
  3. Lisinopril87 claims
  4. Hydrocodone-Acetaminophen85 claims
  5. Quetiapine Fumarate79 claims
  6. Atorvastatin Calcium74 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.

Susan Dyer Claydon among 16,966 family nurse practitioner records in California

Susan Dyer Claydon, N.P. is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 99% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2002 · median 2019 among the 6,793 with a school on file
  • Record last updated2007 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

21 family nurse practitioner records list a practice address in Grass Valley

They are 21 of the 1,540 NPPES records with a practice address in Grass Valley, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Sarah BlandGrass Valley, CA 959451548781495
  2. Margo BolanderGrass Valley, CA 959451386091361
  3. Jed ColvinGrass Valley, CA 959451528315538
  4. Ruth Cutter, N.P.Grass Valley, CA 959451033232012
  5. Agnes Felicano, NPGrass Valley, CA 959451932413796
  6. Rebecca Kauk, FNPGrass Valley, CA 959451295263648
  7. Thais Marek, FNPGrass Valley, CA 959451972087658
  8. Kathlee Martin, APNGrass Valley, CA 959451497944789

Common questions

What is Susan Dyer Claydon, N.P.'s NPI number?

Susan Dyer Claydon, N.P.'s National Provider Identifier (NPI) is 1336147057, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Susan Dyer Claydon, N.P. located?

The NPPES record lists a practice address at 150 Catherine LN, Grass Valley, CA, 95945. Phone: (530) 271-2100. Providers update this record themselves, so call before visiting.

How can I verify Susan Dyer Claydon, N.P.'s license?

NPPES lists California license number 305917, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Susan Dyer Claydon, N.P. prescribe under Medicare Part D?

In 2024, Susan Dyer Claydon, N.P. had 2,903 Medicare Part D claims for 104 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.