NPPES file of Aug 9, 2026

Robert Kay Peterson, M.D.

Sports Medicine (Orthopaedic Surgery) Physician · Vacaville, CA

Robert Kay Peterson, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Vacaville, California, and NPI 1093717951, issued on Aug 11, 2005. Check the license (California G84728, 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
1093717951
Name
Robert Kay Peterson
Credential
M.D.
Primary taxonomy
Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
License number
G84728 CA
Self-reported in NPPES; status is on the state search
Practice location
1010 Nut Tree RD, Vacaville, CA 95687
Phone
(707) 624-7900
Enumerated
Aug 11, 2005
Record last updated
Nov 15, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(707) 624-7901
Medicare enrollment
Enrolled (PECOS I20070815000680); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 1992
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 sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →

Also registered at 1010 Nut Tree RD

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

  1. Miya Allen, M.D.Endocrinology, Diabetes & Metabolism Physician1124285150
  2. Andrew Brooks, M.D.Orthopaedic Surgery Physician1376519561
  3. Collette Dacruz, R.N., C.D.E.Diabetes Educator Registered Nurse1730565698
  4. Laxmi Dhakal, NPNurse Practitioner1376461863
  5. Thomas Erskine, M.D.Internal Medicine Physician1194732339
  6. Hannah Mertens, PA-CPhysician Assistant1386825917

Verify Robert Kay Peterson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G84728    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

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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68% fewer Medicare Part D claims than the average sports medicine (orthopaedic surgery) physician in 2024

91 Medicare Part D claims for 43 beneficiaries, against an average of 288 among the 2,562 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 63 claims were for opioids.

  1. Robert Peterson91
  2. Specialty average288

Most prescribed

  1. Hydrocodone-Acetaminophen43 claims
  2. Oxycodone-Acetaminophen14 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: $65.75

3 payments; by number, the most common kind was food and beverage; the largest payer was Heraeus Medical, LLC. The 2,400 providers of this specialty with any payment received $19,779.31 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Peterson$66
  2. Specialty average$19,779

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. Northbay Health Medical FoundationVacaville, CA
  2. Northbay Physicians Surgery Center, LLCVacaville, CA

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

Robert Kay Peterson among 384 sports medicine (orthopaedic surgery) physician records in California

Robert Kay Peterson, M.D. is one of 384 sports medicine (orthopaedic surgery) physician records with a practice address in California. 88% 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, 93% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated1992 · median 2003 among the 293 with a school on file
  • Record last updated2013 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sports Medicine (Orthopaedic Surgery) Physician providers in California

There are 384 sports medicine (orthopaedic surgery) physician records in California.

All 384 in California → Every provider in Vacaville → Sports Medicine (Orthopaedic Surgery) Physician nationwide →

The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes

  1. Benjamin Ling, MDPlacerville, CA 956671356427272
  2. Jamison Green, M.D.Roseville, CA 956611033430764
  3. William Murrell, MDJackson, CA 956421134109572
  4. Sean Robinson, MDFolsom, CA 956301114346111
  5. Sean Wahlquist, M.D.Folsom, CA 956301205279908
  6. Christopher Kurnik, M.D.El Dorado Hills, CA 957621235663857
  7. Nuvpreet BhandalCarmichael, CA 956081205222445
  8. Scott Fujii, M.D.Carmichael, CA 956081235391798

Common questions

What is Robert Kay Peterson, M.D.'s NPI number?

Robert Kay Peterson, M.D.'s National Provider Identifier (NPI) is 1093717951, issued on Aug 11, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robert Kay Peterson, M.D. located?

The NPPES record lists a practice address at 1010 Nut Tree RD, Vacaville, CA, 95687. Phone: (707) 624-7900. Providers update this record themselves, so call before visiting.

How can I verify Robert Kay Peterson, M.D.'s license?

NPPES lists California license number G84728, 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 Robert Kay Peterson, M.D. prescribe under Medicare Part D?

In 2024, Robert Kay Peterson, M.D. had 91 Medicare Part D claims for 43 beneficiaries; the average among sports medicine (orthopaedic surgery) physician prescribers was 288. 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.