Dr. Gregory H. Fisher, MD
- Medicare services, 2020
- 2,187
- Part D claims, 2022
- 29
- Industry payments
- $3,739
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 15225 Shady Grove Rd, Rockville, MD 20850
- Practice phone
- Call (301) 670-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardiac Associates
Multi-specialty group site · Rockville, Maryland
Find Dr. Fisher'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. Gregory H. Fisher is a cardiologist in Pasadena, Maryland
Dr. Fisher practices at Cardiac Associates in Rockville, Maryland.
Dr. Fisher's NPI, 1093741084, was assigned on June 23, 2006. Dr. Fisher holds Maryland license D0026443.
- NPI
- 1093741084NPI Registry (opens in a new tab)
- NPI enumeration date
- June 23, 2006
- NPI status
- Active
- Practice phone
- (301) 670-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory H. Fisher practices in Rockville and Pasadena
Dr. Fisher's primary practice is Cardiac Associates, at 15225 Shady Grove Rd, Rockville, MD 20850. The practice phone is (301) 670-3000. The NPI Registry lists Dr. Fisher's practice address as 8028 Ritchie Hwy, Pasadena, MD 21122.
- Cardiac AssociatesPrimary15225 Shady Grove Rd, Rockville, MD 20850Phone(301) 670-3000
- NPI Registry address8028 Ritchie Hwy, Pasadena, MD 21122 · Anne Arundel CountyPhone(301) 670-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Gregory H. Fisher is affiliated with 1 site of care and 1 medical group
Dr. Fisher's primary practice is Cardiac Associates in Rockville, Maryland. The medical group on file is Cardiac Associates.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Gregory H. Fisher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fisher practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardiac Associates | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory H. Fisher is one of 503 cardiologists in Maryland
Cardiovascular disease is Dr. Fisher's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Fisher is licensed in Maryland.
Specialties and state licenses
- Cardiovascular disease, MarylandPrimary
Cardiologists near Dr. Fisher
Counts of cardiologists 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. Gregory H. Fisher billed Medicare for 2,187 services in 2020
CMS data shows 2,187 Medicare services from Dr. Fisher across 15 procedure codes in 2020. Medicare paid $149,290 for them.
Dr. Fisher's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1,6792020: 1,37418%
- Tests and treatments
- 2019: 1,1782020: 76235%
- Other services
- 2019: 432020: 407%
- Imaging
- 2019: 472020: 1177%
- Drugs given in the office
- 2019: 602020: 0100%
Where Dr. Fisher's Medicare services took place, 2020
- In an office1,55971%
- In a facility62829%
Dr. Fisher compared with the Maryland median for cardiologists, 2020
- Dr. Fisher
- Maryland median
- Medicare services
- 2,187vs 2,58715% below
- Part D claims
- 29vs 1,19898% below
Medians across 496 cardiologists in Maryland with Dmand AI profiles that report each measure.
Dr. Fisher's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Fisher?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fisher and other cardiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory H. Fisher's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Fisher's median patient age at 67, with 39% women.
Dr. Fisher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women39%
- Men61%
Source: Dmand AI Patient Panel Data
Dr. Gregory H. Fisher wrote 29 Medicare Part D claims in 2022
In 2022, Dr. Fisher wrote 29 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $398 in total drug cost. In 2021, CMS named 1,060 claims across 25 drugs.
Dr. Fisher's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1,0602022: 2997%
Drugs named by CMS: 2 in 2022, 25 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Gregory H. Fisher received $3,739 in industry payments from 2016 to 2021
CMS Open Payments shows 181 general payments to Dr. Fisher from 22 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $628.
General payments to Dr. Fisher by program year, 2016 to 2021
General payments to Dr. Fisher by kind, 2016 to 2021
- Food and beverage$3,725100%
- Education$140%
Companies that paid Dr. Fisher the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gregory H. Fisher'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Gregory H. Fisher
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. Gregory H. Fisher's NPI number?
Dr. Gregory H. Fisher's NPI number is 1093741084. It was assigned on June 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory H. Fisher?
Dr. Gregory H. Fisher is a cardiologist in Pasadena, Maryland. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Gregory H. Fisher practice?
Dr. Fisher practices at 15225 Shady Grove Rd, Rockville, MD 20850. Dr. Fisher also practices at 8028 Ritchie Hwy, Pasadena, MD 21122. Dr. Fisher's primary practice is Cardiac Associates in Rockville, Maryland.
What is Dr. Gregory H. Fisher's office phone number?
The practice phone on file for Dr. Fisher is (301) 670-3000.
What is Dr. Gregory H. Fisher's medical license number?
Dr. Fisher holds Maryland license D0026443.
What medical group is Dr. Gregory H. Fisher part of?
Dr. Fisher is linked to Cardiac Associates.
Does Dr. Gregory H. Fisher accept Medicare?
Yes. CMS data shows Dr. Fisher billed Medicare for 2,187 services in 2020.
What services does Dr. Gregory H. Fisher bill to Medicare?
In 2020, Dr. Fisher's most billed Medicare services were heart test or procedure (93000), office visit, established patient (99214) and hospital inpatient care (99233).
What drugs does Dr. Gregory H. Fisher prescribe most?
In 2022 Medicare Part D data, Dr. Fisher's most prescribed drugs by claims were Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. Gregory H. Fisher received payments from drug or device companies?
CMS Open Payments shows $3,739 in general payments to Dr. Fisher from 22 companies from 2016 to 2021. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Gregory H. Fisher been practicing?
Dr. Fisher's NPI was assigned in 2006.
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