Doctor profile · Federal record
Dr. Catherine Fredricks-Rehagen, DO
Internal Medicine Physician (CMS: Internal Medicine) · Bath, ME
- NPI 1821257650
- Accepts Medicare
- 18 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
108 Centre St
Bath, ME 045302550
(207) 386-1800
fax (207) 386-1801
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- February 5, 2016
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maine #2231
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821257650. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
452
Distinct HCPCS
3
Medicare allowed
$24,710
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 316 | 149 | $66 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 112 | 112 | $23 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 24 | 17 | $58 |
In context: peer comparison
Among 4 peers in Bath Internal Medicine Physician, average services per provider: 125. This provider delivers 3.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,991
Patients
859
Total drug cost
$154,688
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 469 | 142 | $8,329 |
| Levothyroxine Sodium | Generic | 378 | 99 | $6,765 |
| Lisinopril | Generic | 308 | 88 | $2,226 |
| Losartan Potassium | Generic | 216 | 62 | $3,123 |
| Omeprazole | Generic | 213 | 66 | $4,677 |
| Hydrochlorothiazide | Generic | 202 | 61 | $1,185 |
| Simvastatin | Generic | 166 | 47 | $1,803 |
| Amlodipine Besylate | Generic | 165 | 49 | $1,637 |
| Sertraline Hcl | Generic | 145 | 41 | $2,140 |
| Oxycodone Hcl | Generic | 137 | 37 | $2,622 |
Hospital affiliations
Frequently asked questions
What is Dr. Catherine Fredricks-Rehagen's medical specialty?
Dr. Catherine Fredricks-Rehagen practices Internal Medicine Physician in Bath, ME.
Where does Dr. Catherine Fredricks-Rehagen practice?
Dr. Catherine Fredricks-Rehagen practices at 108 Centre St, Bath, ME 045302550. Office phone: 2073861800.
What is Dr. Catherine Fredricks-Rehagen's NPI?
Dr. Catherine Fredricks-Rehagen's National Provider Identifier (NPI) is 1821257650, issued by NPPES.
Does Dr. Catherine Fredricks-Rehagen accept Medicare assignment?
Yes. Dr. Catherine Fredricks-Rehagen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Catherine Fredricks-Rehagen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.