Doctor profile · Federal record
Dr. Guy Delorefice, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Sonoma, CA
- NPI 1952426421
- Accepts Medicare
- MIPS 17.8 / 100 · 2023
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
370 Perkins St
Sonoma, CA 954766827
(707) 938-1255
fax (707) 938-2321
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- May 10, 2017
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A0689180
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1952426421. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,507
Distinct HCPCS
10
Medicare allowed
$130,105
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 391 | 172 | $139 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 163 | 163 | $140 | |
96372 |
Injection of drug or substance under skin or into muscle | 150 | 18 | $16 | |
J3420 |
Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 146 | 11 | $2 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 141 | 88 | $194 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 140 | 123 | $16 | |
G0008 |
Administration of influenza virus vaccine | 89 | 87 | $20 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 88 | 87 | $69 | |
G0102 |
Prostate cancer screening; digital rectal examination | 81 | 81 | $25 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 51 | 43 | $98 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 128. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,292
Patients
337
Total drug cost
$88,042
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 226 | 59 | $3,321 |
| Metoprolol Succinate | Generic | 113 | 32 | $2,867 |
| Hydrochlorothiazide | Generic | 112 | 33 | $660 |
| Losartan Potassium | Generic | 106 | 27 | $2,001 |
| Rosuvastatin Calcium | Generic | 89 | 26 | $1,860 |
| Gabapentin | Generic | 76 | 21 | $1,083 |
| Zolpidem Tartrate | Generic | 71 | 20 | $632 |
| Amlodipine Besylate | Generic | 69 | 18 | $772 |
| Levothyroxine Sodium | Generic | 69 | 20 | $1,519 |
| Eliquis (Apixaban) | Brand | 67 | 11 | $65,449 |
Hospital affiliations
Frequently asked questions
What is Dr. Guy Delorefice's medical specialty?
Dr. Guy Delorefice practices Internal Medicine Physician in Sonoma, CA.
Where does Dr. Guy Delorefice practice?
Dr. Guy Delorefice practices at 370 Perkins St, Sonoma, CA 954766827. Office phone: 7079381255.
What is Dr. Guy Delorefice's NPI?
Dr. Guy Delorefice's National Provider Identifier (NPI) is 1952426421, issued by NPPES.
Does Dr. Guy Delorefice accept Medicare assignment?
Yes. Dr. Guy Delorefice accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Guy Delorefice 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); Injection of drug or substance under skin or into muscle (HCPCS 96372). Source: CMS Medicare Physician & Other Practitioners file.