Dr. David Gregory Gerst III, MD
- Medicare services, 2024
- 3,253
- Medicare patients, 2024
- 339
- Part D claims, 2024
- 3,557
- Hospital affiliations
- 3
- Industry payments
- $2,540
- Practice address
- 203 Perry Pkwy, Gaithersburg, MD 20877
- Practice phone
- Call (571) 366-8850
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Privia Medical Group
Gaithersburg, Maryland
Find Dr. Gerst'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. David Gregory Gerst III is an internist in Gaithersburg, Maryland
Dr. Gerst practices at Privia Medical Group in Gaithersburg, Maryland.
Dr. Gerst's NPI, 1689052524, was assigned on May 12, 2015. Dr. Gerst graduated from Wayne State University School of Medicine in 2016. Dr. Gerst holds Virginia license 0101272476.
- NPI
- 1689052524NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749573020
- NPI enumeration date
- May 12, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (571) 366-8850
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Gregory Gerst III practices at Privia Medical Group in Gaithersburg, Maryland
Dr. Gerst's primary practice is Privia Medical Group, at 203 Perry Pkwy, Gaithersburg, MD 20877 in Montgomery County. The practice phone is (571) 366-8850.
- Privia Medical Group203 Perry Pkwy, Gaithersburg, MD 20877 · Montgomery CountyPhone(571) 366-8850
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Gregory Gerst III is affiliated with 7 sites of care and 1 medical group
Dr. Gerst's primary practice is Privia Medical Group in Gaithersburg, Maryland. Dr. Gerst is also affiliated with Inova Alexandria Hospital. The medical group on file is Privia Medical Group. Dmand AI also links Dr. Gerst to 2 more hospitals, 2 home health agencies and 1 group practice or clinic, each 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 Dr. David Gregory Gerst III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerst practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Privia Medical Group | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Gregory Gerst III is one of 3,320 internists in Maryland
Internal medicine is Dr. Gerst's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gerst is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Gerst
Counts of internists 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. David Gregory Gerst III billed Medicare for 3,253 services in 2024
CMS data shows 3,253 Medicare services from Dr. Gerst across 29 procedure codes in 2024, for 339 Medicare patients. Medicare paid $140,458 for them. Every service was in an office.
Dr. Gerst's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,6222024: 1,43112%
- Office and hospital visits
- 2023: 1,0822024: 77129%
- Other services
- 2023: 2152024: 40789%
- Tests and treatments
- 2023: 1972024: 33671%
- Surgery
- 2023: 2992024: 3083%
Dr. Gerst compared with the Maryland median for internists, 2024
- Dr. Gerst
- Maryland median
- Medicare services
- 3,253vs 6565.0 times
- Medicare patients
- 339vs 25135% above
- Part D claims
- 2,925vs 3099.5 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Gerst'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. Gerst and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Gregory Gerst III treated 339 Medicare patients in 2024, average age 75
CMS counts 339 Medicare patients who saw Dr. Gerst in 2024. The largest group is 65 to 74, with 150 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gerst's median patient age at 63, with 43% women.
Dr. Gerst's Medicare patients by age, 2024
Dr. Gerst's Medicare patients by sex, 2024
- Women17251%
- Men16749%
Chronic conditions among Dr. Gerst's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease48%
- Diabetes32%
- Ischemic heart disease27%
- Anxiety25%
- Atrial fibrillation19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gerst's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women43%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Gregory Gerst III wrote 3,557 Medicare Part D claims in 2024
In 2024, Dr. Gerst wrote 3,557 Medicare Part D claims for 355 patients. 88% of them were for generic drugs. CMS names the drug for 2,925 of them, across 83 drugs with 11 or more claims each, at $294,071 in total drug cost. In 2023, CMS named 1,833 claims across 59 drugs.
Dr. Gerst's Part D claims by kind of drug, 2024
- Generic3,137 claims88%
- Brand-name391 claims11%
- Other29 claims1%
Dr. Gerst's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Gerst's Part D claims, 2024
- Opioids1%25 of 3,557 claims
- Antibiotics3%124 of 3,557 claims
- Antipsychotics, patients 65 and over0%16 of 3,557 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8332024: 2,92560%
Drugs named by CMS: 83 in 2024, 59 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David Gregory Gerst III offers telehealth to Medicare patients
Dr. Gerst accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gerst as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Gregory Gerst III received $2,540 in industry payments from 2016 to 2025
CMS Open Payments shows 110 general payments to Dr. Gerst from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $518.
General payments to Dr. Gerst by program year, 2016 to 2025
Companies that paid Dr. Gerst the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Gregory Gerst III graduated from Wayne State University School of Medicine
Dr. Gerst graduated from Wayne State University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Gregory Gerst III'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 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| 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 Dr. David Gregory Gerst III
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. David Gregory Gerst III's NPI number?
Dr. David Gregory Gerst III's NPI number is 1689052524. It was assigned on May 12, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. David Gregory Gerst III?
Dr. David Gregory Gerst III is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Gregory Gerst III practice?
Dr. Gerst practices at 203 Perry Pkwy, Gaithersburg, MD 20877. Dr. Gerst's primary practice is Privia Medical Group in Gaithersburg, Maryland. Dmand AI also links Dr. Gerst to 2 hospitals, 2 home health agencies and 1 group practice or clinic.
What is Dr. David Gregory Gerst III's office phone number?
The practice phone on file for Dr. Gerst is (571) 366-8850.
What is Dr. David Gregory Gerst III's medical license number?
Dr. Gerst holds Virginia license 0101272476.
Which hospitals is Dr. David Gregory Gerst III affiliated with?
Dr. Gerst is affiliated with Inova Alexandria Hospital. Dmand AI links Dr. Gerst to 2 more hospitals.
What medical group is Dr. David Gregory Gerst III part of?
Dr. Gerst is linked to Privia Medical Group.
Does Dr. David Gregory Gerst III accept Medicare?
Yes. CMS data shows Dr. Gerst billed Medicare for 3,253 services in 2024, and Dr. Gerst accepts Medicare assignment.
Does Dr. David Gregory Gerst III offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gerst as offering telehealth services.
How many Medicare patients does Dr. David Gregory Gerst III see?
CMS counts 339 Medicare patients who saw Dr. Gerst in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. David Gregory Gerst III bill to Medicare?
In 2024, Dr. Gerst's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (80053).
Where did Dr. David Gregory Gerst III go to medical school?
Dr. Gerst graduated from Wayne State University School of Medicine in 2016.
What drugs does Dr. David Gregory Gerst III prescribe most?
In 2024 Medicare Part D data, Dr. Gerst's most prescribed drugs by claims were Rosuvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. David Gregory Gerst III received payments from drug or device companies?
CMS Open Payments shows $2,540 in general payments to Dr. Gerst from 26 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. David Gregory Gerst III been practicing?
Dr. Gerst graduated from medical school in 2016, 10 years ago.
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