Doctor profile · Federal record
Dr. Kathleen Farrell, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Gaithersburg, MD
- NPI 1033328430
- Accepts Medicare
- 26 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
818 West Diamond Avenue, Ste 130
Gaithersburg, MD 20878
(301) 948-8780
fax (301) 519-9093
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- July 31, 2012
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maryland #D0061466
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033328430. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
845
Distinct HCPCS
10
Medicare allowed
$75,447
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 207 | 100 | $143 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 156 | 98 | $101 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 73 | 73 | $143 | |
36415 |
Insertion of needle into vein for collection of blood sample | 62 | 59 | $8 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 52 | 51 | $74 | |
G0008 |
Administration of influenza virus vaccine | 51 | 50 | $35 | |
87804 |
Detection test by immunoassay with direct visual observation for influenza virus | 48 | 24 | $16 | |
90480 |
Admn sarscov2 vacc 1 dose | 42 | 42 | $45 | |
91320 |
Sarscv2 vac 30mcg trs-suc im | 42 | 42 | $125 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 29 | 26 | $17 |
In context: peer comparison
Among 10 peers in Gaithersburg Internal Medicine Physician, average services per provider: 102. This provider delivers 8.3× the peer median.Open Payments
Industry payments received
All-time total
$295
Transactions
13
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 4 | $109.61 | |
| GlaxoSmithKline, LLC. | 2 | $33.26 | |
| Novo Nordisk INC | 1 | $23.81 | |
| Astellas Pharma US INC | 1 | $23.67 | |
| Lilly USA, LLC | 1 | $21.75 | |
| Boston Scientific Corporation | 1 | $21.20 | |
| Sumitomo Pharma America, INC. | 1 | $21.18 | |
| Pfizer INC. | 1 | $20.96 | |
| Merck Sharp & Dohme LLC | 1 | $19.48 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
507
Patients
131
Total drug cost
$10,242
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 100 | 37 | $1,818 |
| Lisinopril | Generic | 78 | 23 | $633 |
| Rosuvastatin Calcium | Generic | 55 | 15 | $923 |
| Amlodipine Besylate | Generic | 45 | 17 | $430 |
| Levothyroxine Sodium | Generic | 34 | 16 | $579 |
| Metoprolol Succinate | Generic | 27 | 12 | $614 |
| Metformin Hcl | Generic | 26 | 11 | $292 |
| Simvastatin | Generic | 26 | 0 | $221 |
| Glipizide ER (Glipizide) | Brand | 22 | 0 | $608 |
| Triamterene-Hydrochlorothiazid (Triamterene/Hydrochlorothiazid) | Brand | 18 | 0 | $253 |
Frequently asked questions
What is Dr. Kathleen Farrell's medical specialty?
Dr. Kathleen Farrell practices Internal Medicine Physician in Gaithersburg, MD.
Where does Dr. Kathleen Farrell practice?
Dr. Kathleen Farrell practices at 818 West Diamond Avenue, Gaithersburg, MD 20878. Office phone: 3019488780.
What is Dr. Kathleen Farrell's NPI?
Dr. Kathleen Farrell's National Provider Identifier (NPI) is 1033328430, issued by NPPES.
Does Dr. Kathleen Farrell accept Medicare assignment?
Yes. Dr. Kathleen Farrell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kathleen Farrell commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.