Doctor profile · Federal record
Dr. Mercedes Ang, M.D.
Internal Medicine Physician (CMS: General Practice) · Student in an Organized Health Care Education/Training Program · Ellsworth, ME
- NPI 1033341813
- Accepts Medicare
- 25 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
50 Union St
Ellsworth, ME 046051534
(207) 664-5311
Credentials & registration
- NPI registered
- August 2009 — 17 yrs on file
- Profile last updated
- June 29, 2021
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Maine #MD19406 · Pennsylvania #MT194315
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033341813. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
219
Distinct HCPCS
6
Medicare allowed
$21,421
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 80 | 37 | $75 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 50 | 25 | $112 | |
99239 |
Hospital discharge day management, more than 30 minutes | 28 | 28 | $104 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 27 | 12 | $100 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 20 | 20 | $157 | |
99238 |
Hospital discharge day management, 30 minutes or less | 14 | 14 | $76 |
In context: peer comparison
Among 3 peers in Ellsworth Internal Medicine Physician, average services per provider: 70. This provider delivers 3.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
37
Patients
25
Total drug cost
$428
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Doxycycline Hyclate | Generic | 14 | 14 | $216 |
| Furosemide | Generic | 12 | 0 | $44 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 11 | 11 | $168 |
Frequently asked questions
What is Dr. Mercedes Ang's medical specialty?
Dr. Mercedes Ang practices Internal Medicine Physician in Ellsworth, ME.
Where does Dr. Mercedes Ang practice?
Dr. Mercedes Ang practices at 50 Union St, Ellsworth, ME 046051534. Office phone: 2076645311.
What is Dr. Mercedes Ang's NPI?
Dr. Mercedes Ang's National Provider Identifier (NPI) is 1033341813, issued by NPPES.
Does Dr. Mercedes Ang accept Medicare assignment?
Yes. Dr. Mercedes Ang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mercedes Ang commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.