NPPES file of Aug 9, 2026

Caleb Thiel, M.D.

Internal Medicine Physician · Grand Rapids, MI

Caleb Thiel, M.D. is an internal medicine physician with a practice address in Grand Rapids, Michigan, and NPI 1023499977, issued on Jun 17, 2015. Check the license (Michigan 4301107875, 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
1023499977
Name
Caleb Thiel
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
4301107875 MI
Self-reported in NPPES; status is on the state search
Practice location
25 Michigan St NE Ste 2100, Grand Rapids, MI 49503
Phone
(616) 391-3777
Enumerated
Jun 17, 2015
Record last updated
Jun 17, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20191004003076); accepts Medicare assignment
Medical or professional school
Northeastern Ohio University College Of Medicine, 2015
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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8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →

Also registered at 25 Michigan St NE Ste 2100

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

  1. Salar Alam, MDInternal Medicine Physician1043705114
  2. Sherilyn Albrecht, DOInternal Medicine Physician1619557360
  3. Navjot Azad, DOInternal Medicine Physician1184428096
  4. Jacob Baker, MD, PHDInternal Medicine Physician1093377012
  5. Maeve Bartiss, MDPediatrics Physician1700415890
  6. Rachel Bass, DONeuromuscular Medicine (Psychiatry & Neurology) Physician1699185280

Verify Caleb Thiel 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 4301107875    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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22% more Medicare Part D claims than the average internal medicine physician in 2024

3,874 Medicare Part D claims for 280 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 65 claims were for opioids.

  1. Caleb Thiel3,874
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium238 claims
  2. Amlodipine Besylate210 claims
  3. Gabapentin137 claims
  4. Omeprazole124 claims
  5. Lisinopril118 claims
  6. Levothyroxine Sodium108 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: $15.20

1 payment: food and beverage; the largest payer was Lilly USA, LLC. 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. Caleb Thiel$15.20
  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.

Bills Medicare through one group practice

  1. Mount Carmel Healthproviders IncColumbus, OH

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

Caleb Thiel among 5,735 internal medicine physician records in Michigan

Caleb Thiel, M.D. 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 2015, is newer than 66% of them.

  • NPI issued2015 · 66% of these records are older, 31% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2015 · median 2006 among the 3,564 with a school on file
  • Record last updated2015 · 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).

451 internal medicine physician records list a practice address in Grand Rapids

They are 451 of the 18,005 NPPES records with a practice address in Grand Rapids, and 5,735 internal medicine physician records in Michigan.

All 5,735 in Michigan → Every provider in Grand Rapids → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Vikas Bajpai, MDGrand Rapids, MI 495031407854458
  2. Jayne Courts, M.D.Grand Rapids, MI 495031518931500
  3. Josip Divic, MDGrand Rapids, MI 495031770587305
  4. Mark Evenhouse, M.D.Grand Rapids, MI 495031053386367
  5. Robert Jarve, MDGrand Rapids, MI 495031285639161
  6. Rajendra Katragadda, MDGrand Rapids, MI 495031811974017
  7. Patricia Lagrand, MDGrand Rapids, MI 495031215931258
  8. Gerald Lee, MDGrand Rapids, MI 495031265437420

Common questions

What is Caleb Thiel, M.D.'s NPI number?

Caleb Thiel, M.D.'s National Provider Identifier (NPI) is 1023499977, issued on Jun 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Caleb Thiel, M.D. located?

The NPPES record lists a practice address at 25 Michigan St NE Ste 2100, Grand Rapids, MI, 49503. Phone: (616) 391-3777. Providers update this record themselves, so call before visiting.

How can I verify Caleb Thiel, M.D.'s license?

NPPES lists Michigan license number 4301107875, 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 Caleb Thiel, M.D. prescribe under Medicare Part D?

In 2024, Caleb Thiel, M.D. had 3,874 Medicare Part D claims for 280 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.

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.