Maria E. Gregory, PA-C
- Medicare patients, 2024
- 759
- Part D claims, 2024
- 821
- MIPS score, 2024
- 82
- Hospital affiliations
- 1
- Industry payments
- $23
- Practice address
- 10710 Charter Dr, Columbia, MD 21044
- Practice phone
- Call (410) 772-7345
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Howard County Gastrointestinal Diagnostic Center
Columbia, Maryland
Find Maria Gregory'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.
Maria E. Gregory is a physician assistant in Columbia, Maryland
Maria Gregory practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland.
Maria Gregory's NPI, 1669440210, was assigned on March 9, 2006. Maria Gregory graduated from George Washington University School of Medicine in 1987. Maria Gregory holds Maryland license C01085.
- NPI
- 1669440210NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264579606
- NPI enumeration date
- March 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 772-7345
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Maria E. Gregory practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland
Maria Gregory's primary practice is Howard County Gastrointestinal Diagnostic Center, at 10710 Charter Dr, Columbia, MD 21044 in Howard County. The practice phone is (410) 772-7345.
- Howard County Gastrointestinal Diagnostic Center10710 Charter Dr, Columbia, MD 21044 · Howard CountyPhone(410) 772-7345
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Maria E. Gregory is affiliated with 3 sites of care and 1 medical group
Maria Gregory's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland. Maria Gregory is also affiliated with The Johns Hopkins Hospital. The medical group on file is ENTAA Care. Dmand AI also links Maria Gregory to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Maria E. Gregory's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maria Gregory practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Howard County Gastrointestinal Diagnostic Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Maria E. Gregory is one of 2,452 physician assistants in Maryland
Physician assistant is Maria Gregory's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Maria Gregory is licensed in Maryland.
Specialties and state licenses
- Physician assistant, MarylandPrimary
Physician assistants near Maria Gregory
Counts of physician assistants 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
Maria E. Gregory treated 759 Medicare patients in 2024, average age 79
CMS counts 759 Medicare patients who saw Maria Gregory in 2024. The largest group is 75 to 84, with 340 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Maria Gregory's median patient age at 75, with 50% women.
Maria Gregory's Medicare patients by age, 2024
Maria Gregory's Medicare patients by sex, 2024
- Women37249%
- Men38751%
Chronic conditions among Maria Gregory's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease51%
- Arthritis50%
- Atrial fibrillation50%
- Chronic kidney disease38%
- Heart failure38%
- Diabetes35%
Share of Medicare patients with each condition. A patient can have several.
Maria Gregory's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Maria E. Gregory wrote 821 Medicare Part D claims in 2024
In 2024, Maria Gregory wrote 821 Medicare Part D claims for 153 patients. 84% of them were for generic drugs.
Maria Gregory's Part D claims by kind of drug, 2024
- Generic686 claims84%
- Brand-name135 claims16%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Maria E. Gregory scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Maria Gregory for performance year 2024, reported as part of a group. Maria Gregory accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Maria Gregory's MIPS scores, performance year 2024
- 82of 100Final score
- 65.1of 100Quality
- 98of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
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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Maria E. Gregory received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Maria Gregory from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $23.
Companies that paid Maria Gregory the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Maria E. Gregory graduated from George Washington University School of Medicine
Maria Gregory graduated from George Washington University School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Maria E. Gregory'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Maria E. Gregory
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maria E. Gregory's NPI number?
Maria E. Gregory's NPI number is 1669440210. It was assigned on March 9, 2006, and it is active in the NPI Registry.
What does Maria E. Gregory specialize in?
Maria E. Gregory is a physician assistant in Columbia, Maryland. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Maria E. Gregory practice?
Maria Gregory practices at 10710 Charter Dr, Columbia, MD 21044. Maria Gregory's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland. Dmand AI also links Maria Gregory to 1 group practice or clinic.
What is Maria E. Gregory's office phone number?
The practice phone on file for Maria Gregory is (410) 772-7345.
What is Maria E. Gregory's medical license number?
Maria Gregory holds Maryland license C01085.
Which hospitals is Maria E. Gregory affiliated with?
Maria Gregory is affiliated with The Johns Hopkins Hospital.
What medical group is Maria E. Gregory part of?
Maria Gregory is linked to ENTAA Care.
Does Maria E. Gregory accept Medicare?
Yes. CMS lists Maria Gregory as accepting Medicare assignment.
What is Maria E. Gregory's MIPS score?
Maria Gregory's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Maria E. Gregory see?
CMS counts 759 Medicare patients who saw Maria Gregory in 2024, with an average age of 79.
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Where did Maria E. Gregory go to medical school?
Maria Gregory graduated from George Washington University School of Medicine in 1987.
Has Maria E. Gregory received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Maria Gregory from 1 company from 2025 to 2025. The largest total came from Abbott Laboratories.
How long has Maria E. Gregory been practicing?
Maria Gregory graduated from medical school in 1987, 39 years ago.
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