NPPES file of Aug 9, 2026

Nathaniel Rohde Woodruff, M.D., PHD, FACC

Cardiovascular Disease Physician · Grass Valley, CA

Nathaniel Rohde Woodruff, M.D., PHD, FACC is a cardiovascular disease physician with a practice address in Grass Valley, California, and NPI 1275623191, issued on Oct 13, 2006. Check the license (California C55840, as entered in NPPES) on the Medical Board of California; 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
1275623191
Name
Nathaniel Rohde Woodruff
Credential
M.D., PHD, FACC
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
C55840 CA
Self-reported in NPPES; status is on the state search
Practice location
150 Catherine LN Ste F, Grass Valley, CA 95945
Phone
(530) 477-8358
Enumerated
Oct 13, 2006
Record last updated
Feb 26, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(530) 477-2015
Medicare enrollment
Enrolled (PECOS I20240320001881); 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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Verify Nathaniel Rohde Woodruff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C55840
    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
Open the California license search

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69% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

947 Medicare Part D claims for 250 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Nathaniel Woodruff947
  2. Specialty average3,078

Most prescribed

  1. Atorvastatin Calcium157 claims
  2. Metoprolol Succinate110 claims
  3. Furosemide76 claims
  4. Eliquis63 claims
  5. Rosuvastatin Calcium57 claims
  6. Amlodipine Besylate49 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: $19.41

1 payment: food and beverage; the largest payer was Amgen Inc. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathaniel Woodruff$19.41
  2. Specialty average$3,819.56

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

Bills Medicare through 2 group practices

  1. Dlp Marquette Physician Practices IncMarquette, MI
  2. Providence Health And Services WashingtonOlympia, WA

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

Nathaniel Rohde Woodruff among 2,574 cardiovascular disease physician records in California

Nathaniel Rohde Woodruff, M.D., PHD, FACC is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 45% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1987 · median 1999 among the 1,742 with a school on file
  • Record last updated2019 · 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 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cardiovascular Disease Physician providers in California

There are 2,574 cardiovascular disease physician records in California.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Peter Callaham, MDGrass Valley, CA 959451750305025
  2. Anabel Facemire, MDGrass Valley, CA 959451427043280
  3. John Mallery, MDGrass Valley, CA 959451780664201
  4. Kenneth Marvin, MDGrass Valley, CA 959451417035221
  5. Ryan Smith, M.D.Grass Valley, CA 959451639197452
  6. Peter Magnusson, M.D.Chico, CA 959261164595914
  7. Marcia Moore, MDChico, CA 959261104875269
  8. Catherine Prince, D.O.Chico, CA 959261649539586

Common questions

What is Nathaniel Rohde Woodruff, M.D., PHD, FACC's NPI number?

Nathaniel Rohde Woodruff, M.D., PHD, FACC's National Provider Identifier (NPI) is 1275623191, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nathaniel Rohde Woodruff, M.D., PHD, FACC located?

The NPPES record lists a practice address at 150 Catherine LN Ste F, Grass Valley, CA, 95945. Phone: (530) 477-8358. Providers update this record themselves, so call before visiting.

How can I verify Nathaniel Rohde Woodruff, M.D., PHD, FACC's license?

NPPES lists California license number C55840, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Nathaniel Rohde Woodruff, M.D., PHD, FACC prescribe under Medicare Part D?

In 2024, Nathaniel Rohde Woodruff, M.D., PHD, FACC had 947 Medicare Part D claims for 250 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.