Physician Profile
Unclaimed ProfileAbout MASLEN
Thomas E Maslen, M.D. practices internal medicine in Greenbelt, MD. Thomas is a 1997 graduate of University of Maryland School of Medicine. Medicare claims data shows Thomas provided 3,708 services to 2,784 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (301) 220-0200
- Email not available
Practice Locations
7525 GREENWAY CENTER DR SUITE 316
Greenbelt, MD 20770
Procedures Most Often Billed to Medicare
3,708 services · 2,784 patients · 19 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
728 |
| Influenza vaccine, trivalent derived from recombinant dna | Treatment | 90673 |
151 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
63 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
19 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
709 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
656 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
471 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
244 |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
168 |
| Administration of influenza virus vaccine | Billing code | G0008 |
163 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internal medicines in Greenbelt 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Maryland School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at University of Maryland School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in MD who bill this service to Medicare most often.
Common questions
What does Dr. Maslen specialize in?
Dr. Maslen is an internal medicine in Greenbelt, MD. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Maslen located?
Dr. Maslen is listed at 7525 GREENWAY CENTER DR SUITE 316, Greenbelt, MD 20770. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Maslen's phone number?
The number on file is (301) 220-0200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Maslen?
Dr. Maslen's National Provider Identifier is 1699742791. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Maslen go to medical school?
Dr. Maslen attended University of Maryland School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Maslen have?
Dr. Maslen has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Maslen do most often?
According to Medicare billing data, Dr. Maslen performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as influenza vaccine, trivalent derived from recombinant dna and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Maslen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Maslen. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.