GREATER BALTIMORE MEDICAL CENTER, INC.
NPI 1356279194
Pain Medicine - Pain Medicine in Baltimore, MD

Q: What is Greater Baltimore Medical Center, Inc.'s specialty?

The primary specialty registered for this NPI is Pain Medicine with taxonomy code 208VP0000X.

Active since May 12, 2026

6535 N CHARLES ST STE 220, BALTIMORE, MD 21204(443) 849-7246 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 30, 2026, May 12, 2026 (2 updates tracked since 2026).

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About Greater Baltimore Medical Center, Inc. NPPES

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

GREATER BALTIMORE MEDICAL CENTER, INC. (NPI 1356279194) is a healthcare organization registered as a pain medicine in Baltimore, Maryland and active in the NPI registry since May 2026. The organization lists Peter Carl Ostasewski, Cfo, as its authorized official.

NPPES Registry Identity

NPI1356279194

Entity TypeOrganization

Primary Taxonomy208VP0000X

Legal Business NameGREATER BALTIMORE MEDICAL CENTER, INC.

Location Address6535 N CHARLES ST STE 220Baltimore, MD 21204-5823

Mailing Address6701 N Charles St., South Chapman Building, Suite 102Baltimore, MD 21204-6808 · (443) 849-2459

Phone(443) 849-7246

Organization SubpartNo

Authorized OfficialPeter Carl OstasewskiCfo · (717) 531-1159

Enumeration DateMay 12, 2026

Last NPPES UpdateJuly 30, 20262 updates tracked since enumeration

NPPES CertifiedJuly 30, 2026

✔ NPI 1356279194 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPain Medicine · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code208VP0000X

Definition

Pain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention of pain, and the evaluation, treatment, and rehabilitation of persons in pain. A comprehensive evaluation incorporates the physical, psychological, cognitive and socio-cultural contributions to pain. The treatment protocol may include pharmacological, invasive, behavioral, cognitive, rehabilitative and complementary strategies provided in a concurrent focused and patient specific manner. The pain medicine physician often serves the patient as a frontline physician regarding their pain, but also may serve as a consultant to other physicians, direct an interdisciplinary/multidisciplinary treatment team, conduct research, or advocate for the patient's pain care with public and private agencies. The Pain Medicine physician may work in variety of settings including office, clinic, hospital, university, or governmental/public agencies.

6535 N CHARLES ST STE 220, Baltimore, MD 21204

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Greater Baltimore Medical Center, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

443

Medicare enrollment records show 443 clinicians reassign Medicare billing to Greater Baltimore Medical Center, Inc., which bills Medicare for the services they deliver. Of these, 33 practice at this address and 326 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 38

Nurse Practitioner92

Hospitalist50

Internal Medicine40

Family Practice29

Otolaryngology26

Obstetrics/Gynecology23

Critical Care (Intensivists)21

Cardiovascular Disease (Cardiology)16

30 other specialties146

Nearest to this location (20)

See all 443

Allison Ashcraft, MS, RD, LDN

Registered Dietitian or Nutrition Professional

NPI 1629653878

6535 N CHARLES ST STE 405
Baltimore, MD 21204

(443) 849-2036

✔ Accepts MedicareSame address

Gena Manley, M.D.

Obstetrics/Gynecology

NPI 1275576670

6535 N CHARLES ST STE 406
Towson, MD 21204

(443) 849-2568

✔ PECOS✔ Accepts MedicareSame address

John Flowers, M.D.

General Surgery

NPI 1891735965

6535 N CHARLES ST STE 125
Baltimore, MD 21204

(410) 821-6260

✔ PECOS✔ Accepts MedicareSame address

Regina Presley, AU.D., CCC/A

Qualified Audiologist

NPI 1619902244

6535 N CHARLES ST STE 250
Baltimore, MD 21204

(443) 849-8400

Same address

Laurence Ross, MD

General Surgery

NPI 1720160484

6535 N CHARLES ST SUTIE 510
Towson, MD 21204

(410) 821-6260

✔ PECOS✔ Accepts MedicareSame address

Ademayowa Ademiluyi, MD

Hospitalist

NPI 1508361346

6701 N CHARLES ST
Towson, MD 21204

(443) 849-2000

✔ PECOS✔ Accepts MedicareSame address

Nicole Bonsavage, MD

Neurology

NPI 1689237760

6701 N CHARLES ST STE 1630
Baltimore, MD 21204

(443) 849-4145

✔ PECOS✔ Accepts MedicareSame address

Susenie Delva Pierre, NP

Nurse Practitioner

NPI 1750863114

6701 N CHARLES ST
Towson, MD 21204

(443) 849-2397

✔ PECOS✔ Accepts MedicareSame address

Rhett Gerard Dimaano, MD

Hospitalist

NPI 1922206200

6701 N CHARLES ST DEPT OF MEDICINE RM 3808
Baltimore, MD 21204

(443) 849-8046

✔ PECOS✔ Accepts MedicareSame address

Geoffrey Neuner, MD

Radiation Oncology

NPI 1548464001

6701 N CHARLES ST SUITE 1400
Baltimore, MD 21204

(443) 849-2540

✔ PECOS✔ Accepts MedicareSame address

Joseph Pattison, CRNP

Nurse Practitioner

NPI 1861282154

6701 N CHARLES ST
Towson, MD 21204

(443) 849-2000

✔ PECOS✔ Accepts MedicareSame address

Ji Hyun Rhee

Pulmonary Disease

NPI 1740593136

6701 N CHARLES ST
Baltimore, MD 21204

(443) 849-3901

✔ PECOS✔ Accepts MedicareSame address

David Roeuth, MD

Critical Care (Intensivists)

NPI 1457857252

6701 N CHARLES ST
Towson, MD 21204

(443) 849-6461

✔ PECOS✔ Accepts MedicareSame address

Varrey Aneesha, M.D.

Obstetrics/Gynecology

NPI 1972948099

6535 N CHARLES ST STE 406
Towson, MD 21204

(443) 849-2568

✔ PECOS✔ Accepts MedicareSame address

Clara Anizoba, MD

Internal Medicine

NPI 1902083512

6535 N CHARLES ST STE 425
Baltimore, MD 21204

(443) 849-2397

✔ PECOS✔ Accepts MedicareSame address

Valerie Cabrera Leon, MD

Colorectal Surgery (Proctology)

NPI 1235686288

6535 N CHARLES ST STE 445
Towson, MD 21204

(443) 849-6910

✔ PECOS✔ Accepts MedicareSame address

Zhuoyan Li, MD

Hematology/Oncology

NPI 1619387867

6535 N CHARLES ST STE 220
Baltimore, MD 21204

(443) 849-3051

✔ PECOS✔ Accepts MedicareSame address

Kristen Phiri, M.D.

Family Practice

NPI 1689054827

6535 N CHARLES ST STE 100
Baltimore, MD 21204

(443) 849-2707

✔ PECOS✔ Accepts MedicareSame address

Bimal Rami, M.D.

Neurosurgery

NPI 1194758508

6535 N CHARLES ST STE 600
Baltimore, MD 21204

(443) 849-4270

✔ PECOS✔ Accepts MedicareSame address

Ololade Sanusi, MD

Family Practice

NPI 1902434152

6535 N CHARLES ST STE 100
Baltimore, MD 21204

(443) 849-2707

✔ PECOS✔ Accepts MedicareSame address

See all 443 clinicians

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

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 Greater Baltimore Medical Center, Inc.'s NPI number?

The NPI number for Greater Baltimore Medical Center, Inc. is 1356279194. It was assigned to this organization in the NPPES registry on May 12, 2026.

Where is Greater Baltimore Medical Center, Inc. located?

Greater Baltimore Medical Center, Inc. is located at 6535 N Charles St Ste 220, Baltimore, MD 21204. The listed phone number is (443) 849-7246.

What is Greater Baltimore Medical Center, Inc.'s specialty?

The primary specialty registered for this NPI is Pain Medicine with taxonomy code 208VP0000X.

Is Greater Baltimore Medical Center, Inc. enrolled in Medicare?

Yes. Greater Baltimore Medical Center, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Greater Baltimore Medical Center, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 443 clinicians in 38 Medicare specialties reassign their Medicare billing to Greater Baltimore Medical Center, Inc.. A 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 the clinician's services. The largest specialties are Nurse Practitioner (92), Hospitalist (50) and Internal Medicine (40). Of these, 33 practice at this address and 326 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Greater Baltimore Medical Center, Inc. was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.