Doctor profile · Federal record
Dr. Rebecca Warkol, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Old Greenwich, CT
- NPI 1184820110
- Accepts Medicare
- 23 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
8 W End Ave
Old Greenwich, CT 068701642
(203) 637-5406
fax (203) 637-5408
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- August 21, 2024
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Connecticut #045522 · New York #241460-1
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184820110. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
791
Distinct HCPCS
9
Medicare allowed
$69,509
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 174 | 98 | $95 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 135 | 125 | $189 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 130 | 122 | $15 | |
96127 |
Assessment of emotional or behavioral problems | 116 | 115 | $5 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 91 | 67 | $134 | |
90662 |
Influenza vaccine split virus, preservative free | 48 | 46 | $72 | |
G0008 |
Administration of influenza virus vaccine | 48 | 46 | $33 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 25 | 25 | $281 | |
G0009 |
Administration of pneumococcal vaccine | 24 | 24 | $33 |
In context: peer comparison
Among 6 peers in Old Greenwich Internal Medicine Physician, average services per provider: 110. This provider delivers 7.2× the peer median.Open Payments
Industry payments received
All-time total
$56
Transactions
3
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk INC | 3 | $55.94 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
989
Patients
226
Total drug cost
$72,893
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 154 | 40 | $1,741 |
| Rosuvastatin Calcium | Generic | 154 | 44 | $4,683 |
| Levothyroxine Sodium | Generic | 110 | 27 | $1,529 |
| Lisinopril | Generic | 74 | 19 | $688 |
| Amlodipine Besylate | Generic | 69 | 17 | $645 |
| Losartan Potassium | Generic | 64 | 17 | $1,242 |
| Ozempic (Semaglutide) | Brand | 54 | 0 | $56,461 |
| Escitalopram Oxalate | Generic | 53 | 12 | $799 |
| Simvastatin | Generic | 48 | 13 | $568 |
| Hydrochlorothiazide | Generic | 42 | 14 | $106 |
Hospital affiliations
Frequently asked questions
What is Dr. Rebecca Warkol's medical specialty?
Dr. Rebecca Warkol practices Internal Medicine Physician in Old Greenwich, CT.
Where does Dr. Rebecca Warkol practice?
Dr. Rebecca Warkol practices at 8 W End Ave, Old Greenwich, CT 068701642. Office phone: 2036375406.
What is Dr. Rebecca Warkol's NPI?
Dr. Rebecca Warkol's National Provider Identifier (NPI) is 1184820110, issued by NPPES.
Does Dr. Rebecca Warkol accept Medicare assignment?
Yes. Dr. Rebecca Warkol accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Rebecca Warkol commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99215); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000). Source: CMS Medicare Physician & Other Practitioners file.