Kathleen Frekko Farrell, M.D.
Internal Medicine Physician · Gaithersburg, MD
Kathleen Frekko Farrell, M.D. is an internal medicine physician with a practice address in Gaithersburg, Maryland, and NPI 1033328430, issued on May 22, 2007. Check the license (Maryland D0061466, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Kathleen Frekko Farrell
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0061466 MD
Self-reported in NPPES; status is on the state search - Practice location
- 818 West Diamond Avenue, Gaithersburg, MD 20878
- Phone
- (301) 948-8780
- Enumerated
- May 22, 2007
- Record last updated
- Jul 31, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (301) 519-9093
- Medicare enrollment
- Enrolled (PECOS I20081001000295); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 818 West Diamond Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Kilavos, M.D.Internal Medicine Physician1609841188
- Ann Raffo, MDInternal Medicine Physician1497752224
Verify Kathleen Frekko Farrell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0061466Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,476 Medicare Part D claims for 137 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium157 claims
- Lisinopril92 claims
- Amlodipine Besylate67 claims
- Rosuvastatin Calcium63 claims
- Levothyroxine Sodium49 claims
- Metformin Hcl42 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $294.92
13 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Privia Care Center LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Frekko Farrell among 3,904 internal medicine physician records in Maryland
Kathleen Frekko Farrell, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · median 2003 among the 2,445 with a school on file
- Record last updated2012 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 internal medicine physician records list a practice address in Gaithersburg
They are 67 of the 2,580 NPPES records with a practice address in Gaithersburg, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Gaithersburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Brigitte Abrishami, MDNorth Potomac, MD 208781730268368
- Gabriel Berrebi, M.D.North Potomac, MD 208781972658342
- Shakti Bhatnagar, M.D.North Potomac, MD 208781346409646
- Priscilla Callahan-Lyon, M.D.Gaithersburg, MD 208781164432423
- James Duffy, MDGaithersburg, MD 208781174695266
- Madhavi Hubbly, M.DGaithersburg, MD 208781710074521
- Mary Kilavos, M.D.Gaithersburg, MD 208781609841188
- Nelson Lui, M.D.N Potomac, MD 208781285687228
Common questions
What is Kathleen Frekko Farrell, M.D.'s NPI number?
Kathleen Frekko Farrell, M.D.'s National Provider Identifier (NPI) is 1033328430, issued on May 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Frekko Farrell, M.D. located?
The NPPES record lists a practice address at 818 West Diamond Avenue, Gaithersburg, MD, 20878. Phone: (301) 948-8780. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Frekko Farrell, M.D.'s license?
NPPES lists Maryland license number D0061466, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathleen Frekko Farrell, M.D. prescribe under Medicare Part D?
In 2024, Kathleen Frekko Farrell, M.D. had 1,476 Medicare Part D claims for 137 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.