Karen Elaine Hayes, D.O.
Obstetrics & Gynecology Physician · Fort Collins, CO
Karen Elaine Hayes, D.O. is an obstetrics & gynecology physician with a practice address in Fort Collins, Colorado, and NPI 1578581195, issued on Jul 18, 2006. Check the license (Colorado 37437, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karen Elaine Hayes
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 37437 CO
14389C WY
Self-reported in NPPES; status is on the state search - Practice location
- 1224 E Elizabeth St, Fort Collins, CO 80524
- Phone
- (970) 221-4977
- Enumerated
- Jul 18, 2006
- Record last updated
- Jun 15, 2022
- Fax
- (970) 221-4980
- Medicare enrollment
- Enrolled (PECOS I20220407000376); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1990
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 906 in Colorado → Look up another NPI →
Also registered at 1224 E Elizabeth St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Chipman, M.A., BCBABehavior Analyst1407428733
Verify Karen Elaine Hayes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 37437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
49 Medicare Part D claims for 20 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol13 claims
- Triamcinolone Acetonide13 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: $148.88
6 payments; by number, the most common kind was food and beverage; the largest payer was Baxter Healthcare. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- OB-Gyn AffiliatesCentennial, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Elaine Hayes among 906 obstetrics & gynecology physician records in Colorado
Karen Elaine Hayes, D.O. is one of 906 obstetrics & gynecology physician records with a practice address in Colorado. 69% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 57% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1990 · median 2008 among the 504 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Colorado
There are 906 obstetrics & gynecology physician records in Colorado.
All 906 in Colorado → Every provider in Fort Collins → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Kyra GeraghtyFort Collins, CO 805241821305947
- Susan Haney, MDFort Collins, CO 805241831163229
- Warren James, MDFort Collins, CO 805241538133996
- Angela King, MDFort Collins, CO 805241518931815
- Adrian Krause, MDFort Collins, CO 805241588893739
- Gary Ludwin, MDFort Collins, CO 805241912971342
- Philip Priebe, M.D.Fort Collins, CO 805241720089014
- Nicole Roberson, MDFort Collins, CO 805241558330266
Common questions
What is Karen Elaine Hayes, D.O.'s NPI number?
Karen Elaine Hayes, D.O.'s National Provider Identifier (NPI) is 1578581195, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Elaine Hayes, D.O. located?
The NPPES record lists a practice address at 1224 E Elizabeth St, Fort Collins, CO, 80524. Phone: (970) 221-4977. Providers update this record themselves, so call before visiting.
How can I verify Karen Elaine Hayes, D.O.'s license?
NPPES lists Colorado license number 37437, 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 Karen Elaine Hayes, D.O. prescribe under Medicare Part D?
In 2024, Karen Elaine Hayes, D.O. had 49 Medicare Part D claims for 20 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.