Doctor profile · Federal record
Dr. Mark Eisenberg, MD
Internal Medicine Physician (CMS: Internal Medicine) · Addiction Medicine (Internal Medicine) Physician · Infectious Disease Physician · Fruit St, MA
- NPI 1487628418
- Accepts Medicare
- 46 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
15 Fruit St, MGH
Fruit St, MA 021143026
(617) 724-8135
fax (617) 724-8010 - Additional location
-
780 Albany St
Boston, MA 021182755
(857) 654-1000
fax (857) 654-1100 - Mailing address
-
Po Box 9142, Mass General Physician Organization
Charlestown, MA 021299142
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- September 23, 2022
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #54761
- Medicaid
- MA #3013103
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487628418. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
143
Distinct HCPCS
5
Medicare allowed
$13,110
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 65 | 24 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 32 | 31 | $97 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 24 | 23 | $65 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $184 | |
99238 |
Hospital discharge day management, 30 minutes or less | 11 | 11 | $87 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 28. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
300
Patients
102
Total drug cost
$7,203
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 48 | 26 | $831 |
| Gabapentin | Generic | 33 | 15 | $1,437 |
| Amlodipine Besylate | Generic | 31 | 14 | $389 |
| Omeprazole | Generic | 26 | 20 | $871 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 25 | 12 | $1,080 |
| Lisinopril | Generic | 23 | 15 | $193 |
| Tamsulosin Hcl | Generic | 19 | 0 | $917 |
| Losartan Potassium | Generic | 18 | 0 | $203 |
| Metformin Hcl | Generic | 17 | 0 | $214 |
| Ibuprofen | Generic | 13 | 0 | $185 |
Frequently asked questions
What is Dr. Mark Eisenberg's medical specialty?
Dr. Mark Eisenberg practices Internal Medicine Physician in Fruit St, MA.
Where does Dr. Mark Eisenberg practice?
Dr. Mark Eisenberg practices at 15 Fruit St, Fruit St, MA 021143026. Office phone: 6177248135.
What is Dr. Mark Eisenberg's NPI?
Dr. Mark Eisenberg's National Provider Identifier (NPI) is 1487628418, issued by NPPES.
Does Dr. Mark Eisenberg accept Medicare assignment?
Yes. Dr. Mark Eisenberg accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Eisenberg commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.