Dr. Geralyn C. O'Reilly, MD
- Medicare services, 2024
- 32
- Medicare patients, 2024
- 19
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Industry payments
- $34
- Practice address
- 22 South Greene Street, Baltimore, MD 21201
- Practice phone
- Call (410) 328-8667
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Reilly's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Geralyn C. O'Reilly is a maternal-fetal medicine specialist in Baltimore, Maryland
Dr. O'Reilly practices at University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System.
Dr. O'Reilly's NPI, 1548348485, was assigned on November 1, 2006. Dr. O'Reilly graduated from New York Medical College in 1994. Dr. O'Reilly's Maryland license number on file is D0065235.
- NPI
- 1548348485NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789786344
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 328-8667
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Geralyn C. O'Reilly practices at University of Maryland Medical Center in Baltimore, Maryland
Dr. O'Reilly's primary practice is University of Maryland Medical Center, at 22 South Greene Street, Baltimore, MD 21201 in Baltimore City. The practice phone is (410) 328-8667.
- University of Maryland Medical Center22 South Greene Street, Baltimore, MD 21201 · Baltimore CityPhone(410) 328-8667
Source: Dmand AI Affiliation Data
Dr. Geralyn C. O'Reilly is affiliated with 6 sites of care and 4 medical groups
Dr. O'Reilly's primary practice is University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System. Dr. O'Reilly is also affiliated with Mercy Medical Center. The medical group on file is Sinai Rehab Pain Medicine Associates. Dmand AI also links Dr. O'Reilly to 3 more group practices and clinics, 3 medical groups and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Geralyn C. O'Reilly's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Reilly practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Maryland Medical Center | Available with a free account |
| +5 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across University of Maryland Medical System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Geralyn C. O'Reilly is one of 55 maternal-fetal medicine specialists in Maryland
Maternal and fetal medicine is Dr. O'Reilly's primary specialty in the NPI Registry, under taxonomy code 207VM0101X. Dr. O'Reilly is board certified in maternal-fetal medicine by the American Board of Obstetrics and Gynecology. Dr. O'Reilly has a license on file in Maryland.
Specialties and state licenses
- Maternal and fetal medicine, MarylandPrimary
Maternal-fetal medicine specialists near Dr. O'Reilly
Counts of maternal-fetal medicine specialists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Geralyn C. O'Reilly billed Medicare for 32 services in 2024
CMS data shows 32 Medicare services from Dr. O'Reilly across 2 procedure codes in 2024, for 19 Medicare patients. Medicare paid $746 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Reilly's Medicare services by type, 2024
- Imaging16
- Tests and treatments16
Dr. O'Reilly compared with the Maryland median for maternal-fetal medicine specialists, 2024
- Dr. O'Reilly
- Maryland median
- Medicare services
- 32vs 32Close to median
Medians across 18 maternal-fetal medicine specialists in Maryland with Dmand AI profiles that report each measure.
Dr. O'Reilly's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Reilly and other maternal-fetal medicine specialists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Geralyn C. O'Reilly treated 19 Medicare patients in 2024, average age 33
CMS counts 19 Medicare patients who saw Dr. O'Reilly in 2024. The largest group is under 65, with 19 patients. 58% of them have mood disorders. 100% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Reilly's median patient age at 33, with 99% women.
Dr. O'Reilly's Medicare patients by age, 2024
Chronic conditions among Dr. O'Reilly's Medicare patients, 2024
- Mood disorders58%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Reilly's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Geralyn C. O'Reilly scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. O'Reilly for performance year 2024, reported as part of a group. Dr. O'Reilly accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. O'Reilly's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Geralyn C. O'Reilly received $34 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. O'Reilly from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Tandem Diabetes Care, Inc. paid the most, $19.
General payments to Dr. O'Reilly by program year, 2016 to 2017
Companies that paid Dr. O'Reilly the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Geralyn C. O'Reilly has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. O'Reilly, most recently Baltimore Magazine Top Doc in 2015.
Awards and honors for Dr. O'Reilly
- 2015
- Baltimore Magazine Top Doc
- 1994
- Alpha Omega Alpha
Source: Dmand AI Professional Profile Data
Dr. Geralyn C. O'Reilly graduated from New York Medical College
Dr. O'Reilly graduated from New York Medical College in 1994. Dr. O'Reilly is a member of AOA, American College of Obstetricians and Gynecologists and Society of Maternal-Fetal Medicine.
- Medical school
- Board certified in maternal-fetal medicine
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Geralyn C. O'Reilly accepts plans from 17 insurance carriers
Dr. O'Reilly is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- CareFirst BlueCross BlueShield
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. O'Reilly accepts, by number of carriers
- Medicare11
- PPO11
- HMO8
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Geralyn C. O'Reilly's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Geralyn C. O'Reilly
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Geralyn C. O'Reilly's NPI number?
Dr. Geralyn C. O'Reilly's NPI number is 1548348485. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Geralyn C. O'Reilly?
Dr. Geralyn C. O'Reilly is a maternal-fetal medicine specialist in Baltimore, Maryland. The primary specialty in the NPI Registry is Maternal & Fetal Medicine Physician (taxonomy code 207VM0101X).
Where does Dr. Geralyn C. O'Reilly practice?
Dr. O'Reilly practices at 22 South Greene Street, Baltimore, MD 21201. Dr. O'Reilly's primary practice is University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System. Dmand AI also links Dr. O'Reilly to 3 group practices and clinics, 3 medical groups and 1 ambulatory surgery center.
What is Dr. Geralyn C. O'Reilly's office phone number?
The practice phone on file for Dr. O'Reilly is (410) 328-8667.
What is Dr. Geralyn C. O'Reilly's medical license number?
Dr. O'Reilly's Maryland license number on file is D0065235.
Which hospitals is Dr. Geralyn C. O'Reilly affiliated with?
Dr. O'Reilly practices at University of Maryland Medical Center in Baltimore, Maryland. Dr. O'Reilly is also affiliated with Mercy Medical Center.
What medical group is Dr. Geralyn C. O'Reilly part of?
Dr. O'Reilly is linked to Sinai Rehab Pain Medicine Associates. Dmand AI links Dr. O'Reilly to 3 more medical groups.
Does Dr. Geralyn C. O'Reilly accept Medicare?
Yes. CMS data shows Dr. O'Reilly billed Medicare for 32 services in 2024, and Dr. O'Reilly accepts Medicare assignment.
What is Dr. Geralyn C. O'Reilly's MIPS score?
Dr. O'Reilly's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Geralyn C. O'Reilly see?
CMS counts 19 Medicare patients who saw Dr. O'Reilly in 2024, with an average age of 33.
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Is Dr. Geralyn C. O'Reilly board certified?
Yes. Dr. O'Reilly is board certified in maternal-fetal medicine by the American Board of Obstetrics and Gynecology.
What services does Dr. Geralyn C. O'Reilly bill to Medicare?
In 2024, Dr. O'Reilly's most billed Medicare services were ultrasound (76820) and blood vessel study (93976).
Where did Dr. Geralyn C. O'Reilly go to medical school?
Dr. O'Reilly graduated from New York Medical College in 1994.
Has Dr. Geralyn C. O'Reilly received payments from drug or device companies?
CMS Open Payments shows $34 in general payments to Dr. O'Reilly from 2 companies from 2016 to 2017. The largest total came from Tandem Diabetes Care, Inc.
How long has Dr. Geralyn C. O'Reilly been practicing?
Dr. O'Reilly graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Geralyn C. O'Reilly accept?
Dr. O'Reilly is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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