Katherine A. Cox, DO
Family Medicine Physician · Grass Lake, MI
Katherine A. Cox, DO is a family medicine physician with a practice address in Grass Lake, Michigan, and NPI 1942520424, issued on Jun 7, 2010. Check the license (Michigan 5101018730, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Katherine A. Cox
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 5101018730 MI
268963 NY
Self-reported in NPPES; status is on the state search - Practice location
- 12369 E Michigan Ave, Grass Lake, MI 49240
- Phone
- (517) 205-2525
- Enumerated
- Jun 7, 2010
- Record last updated
- Mar 13, 2023
- Fax
- (531) 387-6130
- Medicaid ID
- 03662508 NY
- Medicare enrollment
- Enrolled (PECOS I20230316000917); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 12369 E Michigan Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Shea, DNP, RN, NP-CFamily Nurse Practitioner1427539220
- Lauren Sibeck, MDFamily Medicine Physician1265995013
Verify Katherine A. Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101018730Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average family medicine physician in 2024
3,429 Medicare Part D claims for 417 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 219 claims were for opioids.
Most prescribed
- Lisinopril168 claims
- Atorvastatin Calcium139 claims
- Hydrocodone-Acetaminophen122 claims
- Amlodipine Besylate112 claims
- Levothyroxine Sodium99 claims
- Losartan Potassium95 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.
Bills Medicare through one group practice
- W. A. Foote Memorial Hospital, Inc.Grass Lake, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine A. Cox among 6,013 family medicine physician records in Michigan
Katherine A. Cox, DO is one of 6,013 family medicine physician records with a practice address in Michigan. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 57% of them.
- NPI issued2010 · 57% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2010 · median 2008 among the 3,493 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Grass Lake
They are 5 of the 46 NPPES records with a practice address in Grass Lake, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Grass Lake → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kathleen Anzicek, DOGrass Lake, MI 492401336240225
- Mark Leventer, MDGrass Lake, MI 492401174637995
- Sandra Richards, N.P.Grass Lake, MI 492401194747501
- Lauren Sibeck, MDGrass Lake, MI 492401265995013
- Leslie Bennett-Granata, MDHillsdale, MI 492421093713679
- Joanna Branham, PA-CHillsdale, MI 492421033637244
- Lawrence Kimball, DOHillsdale, MI 492421346248937
- Karen Lindower, DOHillsdale, MI 492421033117627
Common questions
What is Katherine A. Cox, DO's NPI number?
Katherine A. Cox, DO's National Provider Identifier (NPI) is 1942520424, issued on Jun 7, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Katherine A. Cox, DO located?
The NPPES record lists a practice address at 12369 E Michigan Ave, Grass Lake, MI, 49240. Phone: (517) 205-2525. Providers update this record themselves, so call before visiting.
How can I verify Katherine A. Cox, DO's license?
NPPES lists Michigan license number 5101018730, 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 Katherine A. Cox, DO prescribe under Medicare Part D?
In 2024, Katherine A. Cox, DO had 3,429 Medicare Part D claims for 417 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.