Helen Kathleen Markley, M.D.
Family Medicine Physician · Parker, CO
Helen Kathleen Markley, M.D. is a family medicine physician with a practice address in Parker, Colorado, and NPI 1205076585, issued on Feb 26, 2009. Check the license (Colorado 47351, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Helen Kathleen Markley
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 47351 CO
Self-reported in NPPES; status is on the state search - Practice location
- 19964 Hilltop RD Ste A, Parker, CO 80134
- Phone
- (303) 841-2212
- Enumerated
- Feb 26, 2009
- Record last updated
- Sep 4, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (303) 841-4716
- Medicaid ID
- 39985555 CO
- Medicare enrollment
- Enrolled (PECOS I20100120000821); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 19964 Hilltop RD Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ian Bach, MDFamily Medicine Physician1003895293
- Kayleigh Belsey, PA-CPhysician Assistant1912416603
- Allison Kemp, PA-CPhysician Assistant1447788971
- Alesha KreutterPhysician Assistant1255990610
- Anna Miller, PA-CMedical Physician Assistant1477065548
- Mary Nguyen, M.D.Family Medicine Physician1386811362
Verify Helen Kathleen Markley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 47351Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
148 Medicare Part D claims for 121 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Nitrofurantoin Mono-Macro12 claims
- Amoxicillin-Clavulanate Potass11 claims
- Lidocaine Hcl Viscous11 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
- Poudre Valley Medical Group LLCAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Helen Kathleen Markley among 3,563 family medicine physician records in Colorado
Helen Kathleen Markley, M.D. is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2008 among the 2,077 with a school on file
- Record last updated2019 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 family medicine physician records list a practice address in Parker
They are 61 of the 1,871 NPPES records with a practice address in Parker, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Parker → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ian Bach, MDParker, CO 801341003895293
- Elizabeth Clark, D.O., MPH & TMParker, CO 801341134195993
- Charlie Dickman, MDParker, CO 801341205832433
- Patricia Fahey, M.D.Parker, CO 801341083655450
- Sivarama Guntur, MDParker, CO 801341003865676
- Lisa Ingram, M.D.Parker, CO 801341841217650
- John Morrison, M.D.Parker, CO 801341720049604
- Leto Quarles, M.D.Parker, CO 801341811917883
Common questions
What is Helen Kathleen Markley, M.D.'s NPI number?
Helen Kathleen Markley, M.D.'s National Provider Identifier (NPI) is 1205076585, issued on Feb 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Helen Kathleen Markley, M.D. located?
The NPPES record lists a practice address at 19964 Hilltop RD Ste A, Parker, CO, 80134. Phone: (303) 841-2212. Providers update this record themselves, so call before visiting.
How can I verify Helen Kathleen Markley, M.D.'s license?
NPPES lists Colorado license number 47351, 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 Helen Kathleen Markley, M.D. prescribe under Medicare Part D?
In 2024, Helen Kathleen Markley, M.D. had 148 Medicare Part D claims for 121 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.