Jennifer Patricia-Reason Mark, DO
Obstetrics & Gynecology Physician · Olean, NY
Jennifer Patricia-Reason Mark, DO is an obstetrics & gynecology physician with a practice address in Olean, New York, and NPI 1376706713, issued on Jul 7, 2008. Check the license (New York 309168, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jennifer Patricia-Reason Mark
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 309168 NY
Self-reported in NPPES; status is on the state search - Practice location
- 135 N Union St, Olean, NY 14760
- Phone
- (716) 375-7500
- Enumerated
- Jul 7, 2008
- Record last updated
- Feb 19, 2025
- Medicare enrollment
- Enrolled (PECOS I20210725000005); accepts Medicare assignment
- Medical or professional school
- Nova Southeastern College Of Osteo Medicine, 2008
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 135 N Union St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Anderson, RPA-CPhysician Assistant1346676392
- Jen AustinCase Manager/Care Coordinator1174087423
- Sydnee Ball, LMSWSocial Worker1083335830
- Sarmad Baloch, MDFamily Medicine Physician1205363322
- Nerissa BaptisteFamily Medicine Physician1922459361
- Carli Bennett, FNPNurse Practitioner1649094541
Verify Jennifer Patricia-Reason Mark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 309168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
113 Medicare Part D claims for 36 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Estradiol28 claims
- Joyeaux11 claims
- Progesterone11 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: $13.62
1 payment: food and beverage; the largest payer was Abbvie Inc. 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
- Southern Tier Community Health Center Network IncOlean, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Patricia-Reason Mark among 3,174 obstetrics & gynecology physician records in New York
Jennifer Patricia-Reason Mark, DO is one of 3,174 obstetrics & gynecology physician records with a practice address in New York. 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 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2008 · median 2002 among the 1,870 with a school on file
- Record last updated2025 · 63% 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 New York 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 New York
There are 3,174 obstetrics & gynecology physician records in New York.
All 3,174 in New York → Every provider in Olean → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Tahir Chauhdry, D.O.Olean, NY 147601861444978
- Itamar Futterman, M.D.Olean, NY 147601891229274
- Kaitlin Hanmer, MB BCH BAOOlean, NY 147601891193330
- Roger Klein, MDOlean, NY 147601114912086
- Jeanne Wiebenga, M.D.Chautauqua, NY 147221629174800
- Min Lin, M.D.Bath, NY 148101114998754
- Nancy Allen, M.D.Jamestown, NY 147011124089818
- Robert Daniels, M.D.Jamestown, NY 147011376504068
Common questions
What is Jennifer Patricia-Reason Mark, DO's NPI number?
Jennifer Patricia-Reason Mark, DO's National Provider Identifier (NPI) is 1376706713, issued on Jul 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Patricia-Reason Mark, DO located?
The NPPES record lists a practice address at 135 N Union St, Olean, NY, 14760. Phone: (716) 375-7500. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Patricia-Reason Mark, DO's license?
NPPES lists New York license number 309168, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer Patricia-Reason Mark, DO prescribe under Medicare Part D?
In 2024, Jennifer Patricia-Reason Mark, DO had 113 Medicare Part D claims for 36 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.