Doctor profile · Federal record
Dr. Peter Gregg, MD
Internal Medicine Physician (CMS: Internal Medicine) · Baltimore, MD
- NPI 1558564294
- Accepts Medicare
- 19 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1235 E Monument St
Baltimore, MD 212025327
(410) 327-5100
fax (410) 327-8373
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- June 18, 2014
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maryland #D0070580
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558564294. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
526
Distinct HCPCS
10
Medicare allowed
$59,174
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 277 | 121 | $135 | |
36415 |
Insertion of needle into vein for collection of blood sample | 67 | 53 | $5 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 49 | 27 | $188 | |
90480 |
Admn sarscov2 vacc 1 dose | 28 | 28 | $43 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 19 | $95 | |
91320 |
Sarscv2 vac 30mcg trs-suc im | 19 | 19 | $128 | |
90662 |
Influenza vaccine split virus, preservative free | 16 | 16 | $64 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 16 | 15 | $259 | |
90688 |
Influenza vaccine, quadrivalent, 0.5 ml dosage | 16 | 16 | $20 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 15 | 15 | $64 |
In context: peer comparison
Among 363 peers in Baltimore Internal Medicine Physician, average services per provider: 105. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$186
Transactions
7
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 4 | $97.18 | |
| Gilead Sciences, INC. | 3 | $88.85 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,290
Patients
376
Total drug cost
$28,711
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 199 | 59 | $3,626 |
| Amlodipine Besylate | Generic | 162 | 37 | $1,650 |
| Lisinopril | Generic | 120 | 34 | $1,471 |
| Metformin Hcl | Generic | 102 | 21 | $669 |
| Nifedipine ER (Nifedipine) | Brand | 83 | 19 | $3,862 |
| Diclofenac Sodium | Generic | 79 | 31 | $1,468 |
| Gabapentin | Generic | 70 | 22 | $2,079 |
| Fluticasone Propionate | Generic | 68 | 22 | $1,397 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 67 | 24 | $3,008 |
| Pantoprazole Sodium | Generic | 61 | 22 | $1,185 |
Frequently asked questions
What is Dr. Peter Gregg's medical specialty?
Dr. Peter Gregg practices Internal Medicine Physician in Baltimore, MD.
Where does Dr. Peter Gregg practice?
Dr. Peter Gregg practices at 1235 E Monument St, Baltimore, MD 212025327. Office phone: 4103275100.
What is Dr. Peter Gregg's NPI?
Dr. Peter Gregg's National Provider Identifier (NPI) is 1558564294, issued by NPPES.
Does Dr. Peter Gregg accept Medicare assignment?
Yes. Dr. Peter Gregg accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Peter Gregg commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.