Donald Eugene Maier, MD
Internal Medicine Physician · Grand Junction, CO
Donald Eugene Maier, MD is an internal medicine physician with a practice address in Grand Junction, Colorado, and NPI 1922064229, issued on Apr 25, 2006. Check the license (Colorado 30987, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Donald Eugene Maier
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30987 CO
Self-reported in NPPES; status is on the state search - Practice location
- 607 28 1/4 RD, Grand Junction, CO 81506
- Phone
- (970) 243-3300
- Enumerated
- Apr 25, 2006
- Record last updated
- Dec 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (970) 243-4464
- Medicaid ID
- 01309871 CO
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 607 28 1/4 RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Randall Coffey, MDInternal Medicine Physician1437193679
- William Foutz, MDInternal Medicine Physician1427097690
- Lisa Hansen, RNCase Management Registered Nurse1992291512
- Erin Hatter, RN, BSNCase Management Registered Nurse1356837975
- Barry Holcomb, MDInternal Medicine Physician1346206745
Verify Donald Eugene Maier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 30987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average internal medicine physician in 2024
4,038 Medicare Part D claims for 403 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. 62 claims were for opioids.
Most prescribed
- Losartan Potassium334 claims
- Atorvastatin Calcium237 claims
- Amlodipine Besylate208 claims
- Levothyroxine Sodium207 claims
- Simvastatin166 claims
- Hydrochlorothiazide139 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.
Donald Eugene Maier among 2,046 internal medicine physician records in Colorado
Donald Eugene Maier, MD is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2015 · 61% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 internal medicine physician records list a practice address in Grand Junction
They are 43 of the 3,482 NPPES records with a practice address in Grand Junction, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Grand Junction → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Cate, M.D.Grand Junction, CO 815061275643611
- Randall Coffey, MDGrand Junction, CO 815061437193679
- William Foutz, MDGrand Junction, CO 815061427097690
- Barry Holcomb, MDGrand Junction, CO 815061346206745
- David Johansen, M.D.Grand Junction, CO 815061114248465
- Kelly King, M.D.Grand Junction, CO 815061558469106
- Susan Laningham, M.D.Grand Junction, CO 815061285648485
- Scott Link, MDGrand Junction, CO 815061679513469
Common questions
What is Donald Eugene Maier, MD's NPI number?
Donald Eugene Maier, MD's National Provider Identifier (NPI) is 1922064229, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald Eugene Maier, MD located?
The NPPES record lists a practice address at 607 28 1/4 RD, Grand Junction, CO, 81506. Phone: (970) 243-3300. Providers update this record themselves, so call before visiting.
How can I verify Donald Eugene Maier, MD's license?
NPPES lists Colorado license number 30987, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donald Eugene Maier, MD prescribe under Medicare Part D?
In 2024, Donald Eugene Maier, MD had 4,038 Medicare Part D claims for 403 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.