Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO
Obstetrics & Gynecology Physician · Morristown, NJ
Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO is an obstetrics & gynecology physician with a practice address in Morristown, New Jersey, and NPI 1619471513, issued on Mar 23, 2018. Check the license on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark-Robert Oluseyi Ishola Mahaga-Ajala
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- Practice location
- 100 Madison Ave, Morristown, NJ 07960
- Phone
- (973) 971-5000
- Enumerated
- Mar 23, 2018
- Record last updated
- Mar 23, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220915002534); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,362 in New Jersey → Look up another NPI →
Also registered at 100 Madison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen AbboudDentist1659121259
- Omar Abdelfattah, MBBCHStudent in an Organized Health Care Education/Training Program1003444167
- Ahmed Abdelhalim, MDInternal Medicine Physician1104386051
- Bavly Abdelmesih, MDStudent in an Organized Health Care Education/Training Program1932901378
- Fatema Abdulhussein, MDStudent in an Organized Health Care Education/Training Program1235514274
- Arkadiy Abkin, MDAnesthesiology Physician1316928666
Verify Mark-Robert Oluseyi Ishola Mahaga-Ajala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
65 Medicare Part D claims for 27 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Estradiol18 claims
- Premarin14 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: $22.83
1 payment: food and beverage; the largest payer was Organon Llc. 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
- Practice Associates Medical GroupMorristown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark-Robert Oluseyi Ishola Mahaga-Ajala among 1,362 obstetrics & gynecology physician records in New Jersey
Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO is one of 1,362 obstetrics & gynecology physician records with a practice address in New Jersey. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 87% of them.
- NPI issued2018 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2003 among the 900 with a school on file
- Record last updated2018 · 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 obstetrics & gynecology physician records list a practice address in Morristown
They are 38 of the 2,942 NPPES records with a practice address in Morristown, and 1,362 obstetrics & gynecology physician records in New Jersey.
All 1,362 in New Jersey → Every provider in Morristown → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Debra Brenin-Goldfischer, M.D.Morristown, NJ 079601275583742
- Angelina Culin, MDMorristown, NJ 079601487613659
- Patrick Culligan, MDMorristown, NJ 079601497727721
- Mary Daly, MDMorristown, NJ 079601447219381
- John Feltz, MDMorristown, NJ 079601619928934
- Christine Ganitsch, MDMorristown, NJ 079601619935871
- David Garfinkel, MDMorristown, NJ 079601760476899
- Karen Healy, NPMorristown, NJ 079601588659346
Common questions
What is Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO's NPI number?
Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO's National Provider Identifier (NPI) is 1619471513, issued on Mar 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO located?
The NPPES record lists a practice address at 100 Madison Ave, Morristown, NJ, 07960. Phone: (973) 971-5000. Providers update this record themselves, so call before visiting.
How can I verify Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO's license?
Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO prescribe under Medicare Part D?
In 2024, Mark-Robert Oluseyi Ishola Mahaga-Ajala, DO had 65 Medicare Part D claims for 27 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.