NPPES file of Aug 9, 2026

Jeffrey R. Williamson, DO

Family Medicine Physician · Rockford, MI

Jeffrey R. Williamson, DO is a family medicine physician with a practice address in Rockford, Michigan, and NPI 1881641165, issued on May 30, 2006. Check the license (Michigan JW011762, as entered in NPPES) on the Michigan Board of Medicine (LARA); 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
1881641165
Name
Jeffrey R. Williamson
Credential
DO
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
JW011762 MI
Self-reported in NPPES; status is on the state search
Practice location
6785 Myers Lake Ave NE, Rockford, MI 49341
Phone
(616) 884-5191
Enumerated
May 30, 2006
Record last updated
Jan 27, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(616) 884-5192
Medicaid ID
48103028 MI
Medicare enrollment
Enrolled (PECOS I20050304000538); accepts Medicare assignment
Medical or professional school
Midwestern University, Chicago College Of Osteopathic Med, 1992
Telehealth
Offers telehealth (CMS)
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.
Download card Updates feed

Also registered at 6785 Myers Lake Ave NE

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

  1. David Fischer, DDSGeneral Practice Dentistry1174641740
  2. Michael Kelley, DPMPodiatrist1548376494

Verify Jeffrey R. Williamson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license JW011762
    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 Michigan 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

58% more Medicare Part D claims than the average family medicine physician in 2024

5,584 Medicare Part D claims for 683 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 285 claims were for opioids.

  1. Jeffrey Williamson5,584
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium351 claims
  2. Levothyroxine Sodium208 claims
  3. Lisinopril170 claims
  4. Omeprazole156 claims
  5. Tamsulosin Hcl140 claims
  6. Amlodipine Besylate139 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: $668.13

34 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jeffrey Williamson$668.13
  2. Specialty average$902.55

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

Bills Medicare through 3 group practices

  1. Center For Physical Rehabilitation And Therapy LPGrand Rapids, MI
  2. Center For Physical Rehabilitation IncGrand Rapids, MI
  3. Jeffrey R Williamson DO PCRockford, MI

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

21 family medicine physician records list a practice address in Rockford

They are 21 of the 493 NPPES records with a practice address in Rockford, and 6,013 family medicine physician records in Michigan.

Other family medicine physician records in Michigan

  1. Asma AbbasHamtramck, MI1982946463
  2. Saadia Abbas, MDChesterfield, MI1619136868
  3. Faezeh AbbasiMonroe, MI1144065921
  4. Layla Abbasi, MDWayne, MI1346177607
  5. Marisa Abbo, DORochester Hills, MI1184605388
  6. Cathleen Abbott, M.D.East Lansing, MI1275630501
  7. Leah Abbott, MDGwinn, MI1760987341
  8. Nina Abboud, DORochester Hills, MI1639750557
  9. Ryan Abboud, DOBingham Farms, MI1104353077
  10. Christina Abd, MDSterling Heights, MI1770371965

Common questions

What is Jeffrey R. Williamson, DO's NPI number?

Jeffrey R. Williamson, DO's National Provider Identifier (NPI) is 1881641165, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey R. Williamson, DO located?

The NPPES record lists a practice address at 6785 Myers Lake Ave NE, Rockford, MI, 49341. Phone: (616) 884-5191. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey R. Williamson, DO's license?

NPPES lists Michigan license number JW011762, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jeffrey R. Williamson, DO prescribe under Medicare Part D?

In 2024, Jeffrey R. Williamson, DO had 5,584 Medicare Part D claims for 683 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.