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DR. MARA ROSNER M.D. M.P.H.
NPI 1831392992
Obstetrics & Gynecology in Baltimore, MD

Active since June 07, 2007PECOS Enrolled
74.39/100
CMS Quality Rating
600 NORTH WOLFE STREET, NELSON 228, BALTIMORE, MD 21236(443) 287-9545(410) 614-1617 Get Directions Write a Review

NPPES record last updated: August 29, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Mara Rosner M.d. M.p.h. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARA ROSNER M.D. M.P.H. (NPI 1831392992) is an individual obstetrics & gynecology provider in Baltimore, Maryland, licensed in Maryland (D85904) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Bronx.

NPPES Registry Identity

NPI1831392992
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. MARA ROSNERCredential: M.D. M.P.H.
Location Address600 NORTH WOLFE STREET, NELSON 228Baltimore, MD 21236-4902
Mailing Address9910 Franklin Square Dr Ste 2110Baltimore, MD 21236-4902 · (410) 933-6423 · Fax (410) 933-1390
Phone(443) 287-9545
Fax(410) 614-1617
Sole ProprietorNo
Enumeration DateJune 7, 2007
Last NPPES UpdateAugust 29, 2018
✔ NPI 1831392992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in MD · D85904✔ Licensed in NY · 240424-1
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
600 NORTH WOLFE STREET, Baltimore, MD 21236
Open in Google Maps ↗

Secondary Practice Location 1

Location 11300 Morris Park Ave, Belfer 501Bronx, NY 10461-1900 · Phone (718) 430-3204 · Fax (718) 430-8750

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mara Rosner M.d. M.p.h. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Mara Rosner reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Johns Hopkins University
Same address
General Practice
600 N WOLFE ST
Baltimore, MD 21205
  • Reassigned Medicare billing, Maryland enrollment
  • 4,483 clinicians in this Medicare group
NPI 1033190442 (410) 614-1732
Johns Hopkins University
9.4 mi
Obstetrics & Gynecology
10753 FALLS ROAD PAVILION II, SUITE 245
Lutherville, MD 21093
  • Reassigned Medicare billing, District of Columbia enrollment
  • 29 clinicians in this Medicare group
NPI 1255315339 (410) 955-5000
Montefiore Medical Center
173 mi
Family Medicine
2633 BROADWAY
New York, NY 10025
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1760288278 (888) 663-6331
New York University
901 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21236 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.71
Promoting Interoperability97
Improvement Activities40
Cost52.43

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mara Rosner's NPI number?

The NPI number for Mara Rosner is 1831392992. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Where is Mara Rosner located?

Mara Rosner practices at 600 North Wolfe Street Nelson 228, Baltimore, MD 21236. The listed phone number is (443) 287-9545.

What is Mara Rosner's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mara Rosner enrolled in Medicare?

Yes. Mara Rosner is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mara Rosner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mara Rosner reassigns Medicare benefits to 4 organizations: Johns Hopkins University (Baltimore, MD), Johns Hopkins University (Lutherville, MD), Montefiore Medical Center (New York, NY) and New York University (Boynton Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mara Rosner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mara Rosner was last updated on August 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.