NPPES file of Aug 9, 2026

Katherine Grace Bolton, DO

Internal Medicine Physician · Kalamazoo, MI

Katherine Grace Bolton, DO is an internal medicine physician with a practice address in Kalamazoo, Michigan, and NPI 1780113258, issued on Jun 8, 2017. Check the license (Michigan 5101025468, 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
1780113258
Name
Katherine Grace Bolton
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
5101025468 MI
5151010665 MI
Self-reported in NPPES; status is on the state search
Practice location
5629 Stadium Dr Ste B, Kalamazoo, MI 49009
Phone
(269) 544-3270
Enumerated
Jun 8, 2017
Record last updated
Jul 21, 2022
Medicare enrollment
Enrolled (PECOS I20200713001147); accepts Medicare assignment
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.
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Also registered at 5629 Stadium Dr Ste B

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

  1. Anja Grommons, RDRegistered Dietitian1588162788
  2. Donald Gusfa, DOInternal Medicine Physician1609510205
  3. Matthew Ling, MDInternal Medicine Physician1760419246
  4. Michael Terrio, DOInternal Medicine Physician1376126326

Verify Katherine Grace Bolton 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 5101025468
    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.

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50% more Medicare Part D claims than the average internal medicine physician in 2024

4,763 Medicare Part D claims for 410 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 42 claims were for opioids.

  1. Katherine Bolton4,763
  2. Specialty average3,176

Most prescribed

  1. Levothyroxine Sodium323 claims
  2. Atorvastatin Calcium250 claims
  3. Rosuvastatin Calcium240 claims
  4. Amlodipine Besylate190 claims
  5. Sertraline Hcl129 claims
  6. Losartan Potassium124 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: $17.00

1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katherine Bolton$17.00
  2. Specialty average$1,303.06

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

2 hospitals and group practices

  1. Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
  2. Powerback Rehabilitation LLCPortage, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Katherine Grace Bolton among 5,735 internal medicine physician records in Michigan

Katherine Grace Bolton, DO is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 71% of them.

  • NPI issued2017 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2017 · median 2006 among the 3,564 with a school on file
  • Record last updated2022 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

158 internal medicine physician records list a practice address in Kalamazoo

They are 158 of the 6,553 NPPES records with a practice address in Kalamazoo, and 5,735 internal medicine physician records in Michigan.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Saadat Abbasi, MDKalamazoo, MI 490091912005596
  2. Tahir Alvi, M.D.Kalamazoo, MI 490091174509855
  3. Adam Basha, D.O.Kalamazoo, MI 490091023759214
  4. Albert Cabala, MDKalamazoo, MI 490091124098694
  5. Sara Custodio, M.D.Kalamazoo, MI 490091417162173
  6. Stephen Dallas, M.D., M.A.Kalamazoo, MI 490091356393482
  7. Branko Grinfeld, M.D.Kalamazoo, MI 490091356436976
  8. Donald Gusfa, DOKalamazoo, MI 490091609510205

Common questions

What is Katherine Grace Bolton, DO's NPI number?

Katherine Grace Bolton, DO's National Provider Identifier (NPI) is 1780113258, issued on Jun 8, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Grace Bolton, DO located?

The NPPES record lists a practice address at 5629 Stadium Dr Ste B, Kalamazoo, MI, 49009. Phone: (269) 544-3270. Providers update this record themselves, so call before visiting.

How can I verify Katherine Grace Bolton, DO's license?

NPPES lists Michigan license number 5101025468, 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 Grace Bolton, DO prescribe under Medicare Part D?

In 2024, Katherine Grace Bolton, DO had 4,763 Medicare Part D claims for 410 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.