Doctor profile · Federal record
Dr. Thomas Maslen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Greenbelt, MD
- NPI 1699742791
- Accepts Medicare
- 29 yrs in practice
- Male
- No sanctions
Practice & contact
- Primary practice
-
7525 Greenway Center Dr, Suite 316
Greenbelt, MD 207703509
(301) 220-0200
fax (301) 345-6956
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maryland #D55559
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699742791. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,687
Distinct HCPCS
10
Medicare allowed
$296,445
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 830 | 553 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 812 | 523 | $93 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 651 | 403 | $110 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 483 | 483 | $144 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 193 | 29 | $65 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 164 | 118 | $87 | |
G0008 |
Administration of influenza virus vaccine | 130 | 129 | $35 | |
90662 |
Influenza vaccine split virus, preservative free | 121 | 120 | $72 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 60 | 55 | $17 | |
G0009 |
Administration of pneumococcal vaccine | 34 | 34 | $35 |
In context: peer comparison
Among 7 peers in Greenbelt Internal Medicine Physician, average services per provider: 203. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$47
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Silk Road Medical, INC. | 1 | $32.94 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $14.07 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,140
Patients
671
Total drug cost
$39,861
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 513 | 140 | $9,581 |
| Amlodipine Besylate | Generic | 223 | 72 | $1,951 |
| Levothyroxine Sodium | Generic | 154 | 43 | $2,846 |
| Rosuvastatin Calcium | Generic | 150 | 47 | $6,070 |
| Metformin Hcl | Generic | 144 | 43 | $1,662 |
| Hydrochlorothiazide | Generic | 134 | 39 | $644 |
| Lisinopril | Generic | 114 | 35 | $1,496 |
| Losartan Potassium | Generic | 113 | 32 | $1,938 |
| Alprazolam | Generic | 92 | 33 | $1,075 |
| Prednisone | Generic | 90 | 51 | $408 |
Frequently asked questions
What is Dr. Thomas Maslen's medical specialty?
Dr. Thomas Maslen practices Internal Medicine Physician in Greenbelt, MD.
Where does Dr. Thomas Maslen practice?
Dr. Thomas Maslen practices at 7525 Greenway Center Dr, Greenbelt, MD 207703509. Office phone: 3012200200.
What is Dr. Thomas Maslen's NPI?
Dr. Thomas Maslen's National Provider Identifier (NPI) is 1699742791, issued by NPPES.
Does Dr. Thomas Maslen accept Medicare assignment?
Yes. Dr. Thomas Maslen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Maslen commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.