Stephen Douglas Haley, MD
Internal Medicine Physician · Longmont, CO
Stephen Douglas Haley, MD is an internal medicine physician with a practice address in Longmont, Colorado, and NPI 1306973326, issued on Feb 27, 2007. Check the license (Colorado 38354, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Douglas Haley
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 38354 CO
DR.0038354 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2345 Bent Way, Longmont, CO 80503
- Phone
- (303) 338-4545
- Enumerated
- Feb 27, 2007
- Record last updated
- Oct 16, 2025
- Medicaid ID
- 44629362 CO
- Medicare enrollment
- Enrolled (PECOS I20080226000473); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1998
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 2345 Bent Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kirsten Borbe, M.D.Internal Medicine Physician1184751117
- Michael Borkowski, PAMedical Physician Assistant1457495244
Verify Stephen Douglas Haley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 38354Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average internal medicine physician in 2024
3,344 Medicare Part D claims for 382 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. 102 claims were for opioids.
Most prescribed
- Atorvastatin Calcium320 claims
- Levothyroxine Sodium186 claims
- Lisinopril138 claims
- Tamsulosin Hcl122 claims
- Amlodipine Besylate114 claims
- Simvastatin104 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
- Colorado Permanente Medical Group PCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Douglas Haley among 2,046 internal medicine physician records in Colorado
Stephen Douglas Haley, 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 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1998 · median 2006 among the 1,090 with a school on file
- Record last updated2025 · 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).
45 internal medicine physician records list a practice address in Longmont
They are 45 of the 2,381 NPPES records with a practice address in Longmont, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Longmont → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kirsten Borbe, M.D.Longmont, CO 805031184751117
- Trevor Clayborn, MDLongmont, CO 805031639209471
- Stuart Geer, MDLongmont, CO 805031144357153
- Tracy Lippard, M.D.Longmont, CO 805031487784245
- Ann SterlingLongmont, CO 805031336283118
- Theresa TylerLongmont, CO 805031023152741
- John Even, MDLongmont, CO 805041578513693
- Freda Gardner, MDLongmont, CO 805041750378279
Common questions
What is Stephen Douglas Haley, MD's NPI number?
Stephen Douglas Haley, MD's National Provider Identifier (NPI) is 1306973326, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Douglas Haley, MD located?
The NPPES record lists a practice address at 2345 Bent Way, Longmont, CO, 80503. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Stephen Douglas Haley, MD's license?
NPPES lists Colorado license number 38354, 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 Stephen Douglas Haley, MD prescribe under Medicare Part D?
In 2024, Stephen Douglas Haley, MD had 3,344 Medicare Part D claims for 382 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.