Mark D. Erhardt, D.O.
Family Medicine Physician · Bartlesville, OK
Mark D. Erhardt, D.O. is a family medicine physician with a practice address in Bartlesville, Oklahoma, and NPI 1770546640, issued on Apr 10, 2006. Check the license (Oklahoma 4367, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Mark D. Erhardt
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 4367 OK
0102201015 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 SE Adams RD, Bartlesville, OK 74006
- Phone
- (918) 331-9979
- Enumerated
- Apr 10, 2006
- Record last updated
- Jun 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (918) 331-2346
- Medicare enrollment
- Enrolled (PECOS I20060804000099); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,303 in Oklahoma → Look up another NPI →
Also registered at 4150 SE Adams RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Holdman, MDFamily Medicine Physician1972768919
- Amber Mendez, APRN-CNPFamily Nurse Practitioner1245115419
- Allison Redding, RDN, LDRegistered Dietitian1659152734
Verify Mark D. Erhardt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 4367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,385 Medicare Part D claims for 681 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 834 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen416 claims
- Levothyroxine Sodium404 claims
- Rosuvastatin Calcium383 claims
- Atorvastatin Calcium251 claims
- Lisinopril236 claims
- Pantoprazole Sodium224 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: $788.28
38 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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
- Primary Care Associates PCBartlesville, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark D. Erhardt among 2,303 family medicine physician records in Oklahoma
Mark D. Erhardt, D.O. is one of 2,303 family medicine physician records with a practice address in Oklahoma. 79% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1993 · median 2008 among the 1,407 with a school on file
- Record last updated2010 · 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 207Q00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 family medicine physician records list a practice address in Bartlesville
They are 22 of the 1,023 NPPES records with a practice address in Bartlesville, and 2,303 family medicine physician records in Oklahoma.
All 2,303 in Oklahoma → Every provider in Bartlesville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Bumpus, MDBartlesville, OK 740061932108792
- William Carter, M.D.Bartlesville, OK 740061831193341
- Kyle Craig, MDBartlesville, OK 740061528138633
- Scarlett Custer, D. O.Bartlesville, OK 740061336218320
- Ashley Estep, DOBartlesville, OK 740061881875946
- William Fesler, MDBartlesville, OK 740061730171679
- Frances Horn, DOBartlesville, OK 740061154313120
- Gerald Pribil, MDBartlesville, OK 740061376535294
Common questions
What is Mark D. Erhardt, D.O.'s NPI number?
Mark D. Erhardt, D.O.'s National Provider Identifier (NPI) is 1770546640, issued on Apr 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Erhardt, D.O. located?
The NPPES record lists a practice address at 4150 SE Adams RD, Bartlesville, OK, 74006. Phone: (918) 331-9979. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Erhardt, D.O.'s license?
NPPES lists Oklahoma license number 4367, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark D. Erhardt, D.O. prescribe under Medicare Part D?
In 2024, Mark D. Erhardt, D.O. had 9,385 Medicare Part D claims for 681 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.