Doctor profile · Federal record
Dr. Mark Parker, M.D.
Nephrology Physician (CMS: Nephrology) · Portland, ME
- NPI 1770583346
- Accepts Medicare
- MIPS 93.1 / 100 · 2023
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
22 Bramhall St
Portland, ME 041023134
(207) 662-0111 - Additional location
-
1600 Congress St Ste B
Portland, ME 041022148
(207) 774-5222
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- September 22, 2021
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Maine #014988
- Medicaid
- ME #287880099
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770583346. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
60
Distinct HCPCS
3
Medicare allowed
$4,822
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
76775 |
Limited ultrasound scan behind abdominal cavity | 27 | 27 | $27 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 21 | 15 | $95 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 12 | 12 | $176 |
In context: peer comparison
Among 11 peers in Portland Nephrology Physician, average services per provider: 52. This provider delivers 1.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
51
Patients
0
Total drug cost
$15,236
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Chlorthalidone | Generic | 14 | 0 | $296 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 14 | 0 | $114 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 12 | 0 | $14,692 |
| Lisinopril | Generic | 11 | 0 | $134 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Parker's medical specialty?
Dr. Mark Parker practices Nephrology Physician in Portland, ME.
Where does Dr. Mark Parker practice?
Dr. Mark Parker practices at 22 Bramhall St, Portland, ME 041023134. Office phone: 2076620111.
What is Dr. Mark Parker's NPI?
Dr. Mark Parker's National Provider Identifier (NPI) is 1770583346, issued by NPPES.
Does Dr. Mark Parker accept Medicare assignment?
Yes. Dr. Mark Parker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Parker commonly perform?
Top Medicare-reported procedures in 2023: Limited ultrasound scan behind abdominal cavity (HCPCS 76775); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.