Doctor profile · Federal record
Dr. Marissa Ambron, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Hospitalist Physician · Williamsport, PA
- NPI 1518113570
- Accepts Medicare
- MIPS 90.3 / 100 · 2023
- 18 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
700 High Street
Williamsport, PA 177013198
(570) 321-2850
fax (570) 321-2851 - Mailing address
-
1201 Grampian Blvd, Suite 1K
Williamsport, PA 177011900
Credentials & registration
- NPI registered
- August 2008 — 18 yrs on file
- Profile last updated
- January 11, 2012
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Pennsylvania #OS014928 · Pennsylvania #0012720
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518113570. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
446
Distinct HCPCS
3
Medicare allowed
$43,229
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 309 | 136 | $78 | |
99239 |
Hospital discharge day management, more than 30 minutes | 70 | 68 | $112 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 67 | 65 | $170 |
In context: peer comparison
Among 5 peers in Williamsport Internal Medicine Physician, average services per provider: 148. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$113
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $113.40 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Marissa Ambron's medical specialty?
Dr. Marissa Ambron practices Internal Medicine Physician in Williamsport, PA.
Where does Dr. Marissa Ambron practice?
Dr. Marissa Ambron practices at 700 High Street, Williamsport, PA 177013198. Office phone: 5703212850.
What is Dr. Marissa Ambron's NPI?
Dr. Marissa Ambron's National Provider Identifier (NPI) is 1518113570, issued by NPPES.
Does Dr. Marissa Ambron accept Medicare assignment?
Yes. Dr. Marissa Ambron accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marissa Ambron commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.