Doctor profile · Federal record
Dr. Clarence Allegakoen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Mountain View, CA
- NPI 1205909637
- Accepts Medicare
- 44 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
2500 Grant RD
Mountain View, CA 940404302
(650) 793-4207
fax (408) 861-0682 - Mailing address
-
10576 Johnson Ave
Cupertino, CA 950143816
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- February 10, 2017
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A53837
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205909637. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,012
Distinct HCPCS
5
Medicare allowed
$269,841
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 1,043 | 208 | $135 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 321 | 105 | $89 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 288 | 216 | $196 | |
99239 |
Hospital discharge day management, more than 30 minutes | 287 | 216 | $131 | |
99238 |
Hospital discharge day management, 30 minutes or less | 73 | 72 | $92 |
In context: peer comparison
Among 31 peers in Mountain View Internal Medicine Physician, average services per provider: 110. This provider delivers 18× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
146
Patients
138
Total drug cost
$1,605
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 23 | 21 | $200 |
| Pantoprazole Sodium | Generic | 21 | 19 | $194 |
| Atorvastatin Calcium | Generic | 18 | 17 | $141 |
| Prednisone | Generic | 18 | 17 | $230 |
| Furosemide | Generic | 17 | 17 | $96 |
| Cephalexin | Generic | 13 | 13 | $47 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 12 | $116 |
| Metoprolol Succinate | Generic | 12 | 11 | $151 |
| Potassium Chloride | Generic | 11 | 11 | $430 |
Frequently asked questions
What is Dr. Clarence Allegakoen's medical specialty?
Dr. Clarence Allegakoen practices Internal Medicine Physician in Mountain View, CA.
Where does Dr. Clarence Allegakoen practice?
Dr. Clarence Allegakoen practices at 2500 Grant RD, Mountain View, CA 940404302. Office phone: 6507934207.
What is Dr. Clarence Allegakoen's NPI?
Dr. Clarence Allegakoen's National Provider Identifier (NPI) is 1205909637, issued by NPPES.
Does Dr. Clarence Allegakoen accept Medicare assignment?
Yes. Dr. Clarence Allegakoen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Clarence Allegakoen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.