Mark Douglas Baker, DO
Family Medicine Physician · Erie, PA
Mark Douglas Baker, DO is a family medicine physician with a practice address in Erie, Pennsylvania, and NPI 1952530594, issued on Jul 2, 2009. Check the license (Pennsylvania OS006249L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark Douglas Baker
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS006249L PA
Self-reported in NPPES; status is on the state search - Practice location
- 2000 W Grandview Blvd, Erie, PA 16509
- Phone
- (814) 868-1088
- Enumerated
- Jul 2, 2009
- Record last updated
- Dec 5, 2023
- Fax
- (814) 868-1094
- Medicaid ID
- 0010935600018 PA
- Medicare enrollment
- Enrolled (PECOS I20130911000058); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1986
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 2000 W Grandview Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicklas JensenStudent in an Organized Health Care Education/Training Program1801713425
- Howard Miller, DDS MBADentist1538159363
Verify Mark Douglas Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS006249LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 92% of the cost of the top drugs
1,365 Medicare Part D claims for 211 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy127 claims
- Atorvastatin Calcium89 claims
- Amlodipine Besylate80 claims
- Omeprazole55 claims
- Lisinopril51 claims
- Levothyroxine Sodium49 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: $1,258.06
20 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 2 group practices
- Medical Associates OF ErieErie, PA
- Millcreek Community HospitalErie, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Douglas Baker among 7,483 family medicine physician records in Pennsylvania
Mark Douglas Baker, DO is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 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 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1986 · median 2005 among the 4,529 with a school on file
- Record last updated2023 · 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
219 family medicine physician records list a practice address in Erie
They are 219 of the 5,083 NPPES records with a practice address in Erie, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Erie → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dennis Agostini, DOErie, PA 165091164422184
- Ballantines Alegre, DOErie, PA 165091255847216
- Robert Chandler, DOErie, PA 165091922244664
- Margaret Chilcott, D.O.Erie, PA 165091881800969
- Scott DakanErie, PA 165091609397959
- Raymond McAllisterErie, PA 165091255324349
- Gary Peterson, DOErie, PA 165091932364924
- Danielle Sanders, M.D.Erie, PA 165091306167564
Common questions
What is Mark Douglas Baker, DO's NPI number?
Mark Douglas Baker, DO's National Provider Identifier (NPI) is 1952530594, issued on Jul 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Douglas Baker, DO located?
The NPPES record lists a practice address at 2000 W Grandview Blvd, Erie, PA, 16509. Phone: (814) 868-1088. Providers update this record themselves, so call before visiting.
How can I verify Mark Douglas Baker, DO's license?
NPPES lists Pennsylvania license number OS006249L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Douglas Baker, DO prescribe under Medicare Part D?
In 2024, Mark Douglas Baker, DO had 1,365 Medicare Part D claims for 211 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.