Doctor profile · Federal record

Dr. Gregory Constantine, MD

Internal Medicine Physician · Allergy & Immunology (Internal Medicine) Physician · Bethesda, MD

  • NPI 1881038107
  • MIPS 79.1 / 100 · 2023
  • 13 yrs on file
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
10 Center Drive
Bethesda, MD 20814
(301) 761-7966
Additional location
One Baylor Plaza, Dept of Internal Medicine Room 022D
Houston, TX 77030
(713) 798-5585
Mailing address
Building 10, 10 Center Drive, Room # 11C112, Mail Stop 1880
Bethesda, MD 20814

Credentials & registration

NPPES · NUCC
NPI registered
April 2013 — 13 yrs on file
Profile last updated
July 11, 2019
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Texas #BP10046658 · District of Columbia #MD045198

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1881038107. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
82
Distinct HCPCS
1
Medicare allowed
$10,396
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 82 45 $127

In context: peer comparison

Among 31 peers in this city , average services per provider: 149. This provider delivers 0.6× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Gregory Constantine's medical specialty?
Dr. Gregory Constantine practices Internal Medicine Physician in Bethesda, MD.
Where does Dr. Gregory Constantine practice?
Dr. Gregory Constantine practices at 10 Center Drive, Bethesda, MD 20814. Office phone: 3017617966.
What is Dr. Gregory Constantine's NPI?
Dr. Gregory Constantine's National Provider Identifier (NPI) is 1881038107, issued by NPPES.
What procedures does Dr. Gregory Constantine commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.