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DR. GERALYN C O'REILLY M.D.
NPI 1548348485
Obstetrics & Gynecology - Maternal & Fetal Medicine in Baltimore, MD

Active since November 01, 2006PECOS EnrolledAccepts Medicare Assignment
76.58/100
CMS Quality Rating
419 W REDWOOD ST STE 500, BALTIMORE, MD 21201(667) 214-1300(410) 328-2648 Get Directions Write a Review

NPPES record last updated: May 29, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Geralyn C O'reilly M.d. NPPES

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

DR. GERALYN C O'REILLY M.D. (NPI 1548348485) is an individual maternal & fetal medicine provider in Baltimore, Maryland, licensed in Maryland (D0065235) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and is a graduate of New York Medical College (1994).

NPPES Registry Identity

NPI1548348485
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameDR. GERALYN C O'REILLYCredential: M.D.
Location Address419 W REDWOOD ST STE 500Baltimore, MD 21201-7001
Mailing Address250 W Pratt St Ste 880Baltimore, MD 21201-6829 · (667) 214-1302 · Fax (410) 328-1669
Phone(667) 214-1300
Fax(410) 328-2648
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1994
Enumeration DateNovember 1, 2006
Last NPPES UpdateMay 29, 2025
NPPES CertifiedMay 29, 2025
✔ NPI 1548348485 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in MD · D0065235
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License D0065235 (MD)
419 W REDWOOD ST STE 500, Baltimore, MD 21201
Open in Google Maps ↗

Other Names 1

Other Name (5)Dr. Geralyn A. Camacho M.d.

Other Identifiers 1

Medicaid012862700MD

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Geralyn C O'reilly M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4789786344
PECOS Enrollment IDI20070228000281
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

3

Medicare enrollment records show Geralyn O'reilly reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of MD Obstetrical And Gynecological Asso. PA
Same address
Obstetrics & Gynecology
419 W REDWOOD ST, SUITE 500
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: University Of Maryland Obstetrical And Gynecological Associates PA
  • 68 clinicians in this Medicare group
NPI 1144252990 (667) 214-1300
St Paul Place Specialists, Inc.
0.5 mi
Hematology & Oncology
227 SAINT PAUL PLACE, 4TH FLOOR
Baltimore, MD 21202
  • Reassigned Medicare billing, Maryland enrollment
  • 423 clinicians in this Medicare group
NPI 1174564736 (410) 783-5858
Sinai Hospital Of Baltimore, Inc.
1.4 mi
General Acute Care Hospital
2000 W BALTIMORE ST
Baltimore, MD 21223
  • Reassigned Medicare billing, Maryland enrollment
  • 664 clinicians in this Medicare group
NPI 1528716115 (410) 362-3000

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound scan of fetal umbilical artery blood flow rate 76820
An ultrasound scan of the fetal umbilical artery blood flow rate is a safe procedure that helps monitor the baby's well-being in the womb. It uses sound waves to check how blood is flowing in the baby's umbilical artery, which can provide valuable information about the baby's health.
16 services12 patients
Ultrasound of abdomen and pelvis artery and vein blood flow 93976
An ultrasound of your abdomen and pelvis arteries and veins is a non-invasive procedure that uses sound waves to create images of your blood vessels. This helps in assessing the flow of blood, identifying blockages, or detecting other abnormalities. It's a safe, painless process.
16 services12 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Maryland Medical Center

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210002
Location22 South Greene StreetBaltimore, MD 21201 · Baltimore City County
Emergency services Birthing friendly

Mercy Medical Center Inc

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number210008
Location301 Saint Paul PlaceBaltimore, MD 21202 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21201 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.

76.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.56
Promoting Interoperability100
Improvement Activities40
Cost48.54

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KARL EDWARD SEIF M.D.
Obstetrics & Gynecology
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
DR. SUZANNE ALY ABDELAZIM D.O.
Obstetrics & Gynecology (Obstetrics)
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
KIMBERLY CAROL JONES-BEATTY CNM
Advanced Practice Midwife
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
JUDE CRINO M.D.
Obstetrics & Gynecology (Maternal & Fetal Medicine)
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
ELIZABETH S KARTAL CNM
Midwife
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
DR. KRISTA MAREE MEHLHAFF DO
Obstetrics & Gynecology (Maternal & Fetal Medicine)
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
ALLISON C BINGHAM
Nurse Practitioner (Women's Health)
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300
GENEVIEVE MARIE LIPARI GIFFIN CNM
Advanced Practice Midwife
419 W REDWOOD ST STE 500
BALTIMORE, MD 21201
Baltimore City (667) 214-1300

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 Geralyn O'reilly's NPI number?

The NPI number for Geralyn O'reilly is 1548348485. It was assigned to this individual provider in the NPPES registry on November 1, 2006. The provider is also known as Dr. Geralyn A. Camacho M.D..

Where is Geralyn O'reilly located?

Geralyn O'reilly practices at 419 W Redwood St Ste 500, Baltimore, MD 21201. The listed phone number is (667) 214-1300.

What is Geralyn O'reilly's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Geralyn O'reilly enrolled in Medicare?

Yes. Geralyn O'reilly is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Geralyn O'reilly's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Geralyn O'reilly reassigns Medicare benefits to 3 organizations: University Of MD Obstetrical And Gynecological Asso. PA (Baltimore, MD), St Paul Place Specialists, Inc. (Baltimore, MD) and Sinai Hospital Of Baltimore, Inc. (Baltimore, MD). 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 Geralyn O'reilly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Geralyn O'reilly affiliated with any hospitals?

According to CMS data, Geralyn O'reilly is affiliated with University Of Maryland Medical Center and Mercy Medical Center Inc.

When was this NPI record last updated?

The NPPES record for Geralyn O'reilly was last updated on May 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.