Doctor profile · Federal record

Dr. Thomas Isaac, MD

Internal Medicine Physician · Braintree, MA

  • NPI 1811939374
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
111 Grossman Dr
Braintree, MA 021844997
(781) 849-2405
fax (781) 849-2238

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
March 7, 2021
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Massachusetts #223676

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1811939374. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
635
Distinct HCPCS
10
Medicare allowed
$14,514
HCPCS Description Services Patients Avg allowed
36415 Insertion of needle into vein for collection of blood sample 144 64 $8
83036 Hemoglobin a1c level 79 44 $10
80061 Blood test, lipids (cholesterol and triglycerides) 50 48 $13
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 41 41 $54
99214 Established patient office or other outpatient visit, 30-39 minutes 40 34 $106
82565 Blood creatinine level 38 36 $5
82043 Urine microalbumin (protein) level 31 30 $6
82570 Creatinine level to test for kidney function or muscle injury 29 28 $5
99213 Established patient office or other outpatient visit, 20-29 minutes 28 25 $72
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test 23 23 $6

In context: peer comparison

Among 17 peers in Braintree Internal Medicine Physician, average services per provider: 110. This provider delivers 5.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,071
Patients
241
Total drug cost
$25,693
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 142 43 $3,492
Rosuvastatin Calcium Generic 137 38 $8,119
Amlodipine Besylate Generic 110 34 $1,269
Metformin Hcl ER (Metformin Hcl) Brand 105 25 $1,996
Lisinopril Generic 83 24 $1,138
Metoprolol Succinate Generic 79 25 $1,888
Losartan Potassium Generic 72 18 $1,495
Hydrochlorothiazide Generic 65 21 $187
Simvastatin Generic 50 0 $728
Omeprazole Generic 48 13 $1,678

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Isaac's medical specialty?
Dr. Thomas Isaac practices Internal Medicine Physician in Braintree, MA.
Where does Dr. Thomas Isaac practice?
Dr. Thomas Isaac practices at 111 Grossman Dr, Braintree, MA 021844997. Office phone: 7818492405.
What is Dr. Thomas Isaac's NPI?
Dr. Thomas Isaac's National Provider Identifier (NPI) is 1811939374, issued by NPPES.
What procedures does Dr. Thomas Isaac commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Hemoglobin a1c level (HCPCS 83036); Blood test, lipids (cholesterol and triglycerides) (HCPCS 80061). Source: CMS Medicare Physician & Other Practitioners file.