Eric Harker, MD
Internal Medicine Physician · Lyons, CO
Eric Harker, MD is an internal medicine physician with a practice address in Lyons, Colorado, and NPI 1366572109, issued on Mar 7, 2007. Check the license (Colorado 41328, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Eric Harker
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 41328 CO
Self-reported in NPPES; status is on the state search - Practice location
- 754 Apple Valley RD, Lyons, CO 80540
- Phone
- (303) 748-5781
- Enumerated
- Mar 7, 2007
- Entity
- Type 1 · individual
Verify Eric Harker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 41328Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
32 Medicare Part D claims for 16 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of 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.
One hospital or facility affiliation
- Nuvoair Medical PCHoover, AL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
1 internal medicine physician records list a Lyons practice address
They are 1 of the 56 NPPES records with a Lyons practice address, and 2,683 internal medicine physician records in Colorado.
Other internal medicine physician records in Colorado
- Emily Aaron, MDDenver, CO1205256971
- Cynthia Abacan, MDPueblo, CO1467438549
- David Abbey, MS MDFort Collins, CO1568483196
- Ahmed Abdulrahman, MDPueblo, CO1093425068
- Victor Abela, D.O.Denver, CO1902194152
- Durant Abernethy, M.D.Frisco, CO1427289040
- Lon Abney, MDDurango, CO1962883272
- Alan Aboaf, MDCentennial, CO1003866393
- Adam Abraham, MDAurora, CO1720178304
- Phebe Abraham, MDGreeley, CO1558980540
Common questions
What is Eric Harker, MD's NPI number?
Eric Harker, MD's National Provider Identifier (NPI) is 1366572109, issued on Mar 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Eric Harker, MD located?
The NPPES record lists a practice address at 754 Apple Valley RD, Lyons, CO, 80540. Phone: (303) 748-5781. Providers update this record themselves, so call before visiting.
How can I verify Eric Harker, MD's license?
NPPES lists Colorado license number 41328, 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 Eric Harker, MD prescribe under Medicare Part D?
In 2024, Eric Harker, MD had 32 Medicare Part D claims for 16 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.