Doctor profile · Federal record
Dr. David Chappell, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Petaluma, CA
- NPI 1598732463
- Accepts Medicare
- 47 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
141 Lynch Creek Way, Suite A
Petaluma, CA 94954
(707) 762-0001
fax (707) 765-0666
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- July 16, 2010
- Year of graduation
- 1979 — 47 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- California #C40326
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598732463. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,907
Distinct HCPCS
10
Medicare allowed
$149,890
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 678 | 121 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 449 | 146 | $139 | |
36415 |
Insertion of needle into vein for collection of blood sample | 289 | 33 | $8 | |
81002 |
Urinalysis, manual test | 245 | 30 | $3 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 61 | 36 | $16 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 47 | 43 | $192 | |
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 35 | 15 | $36 | |
77080 |
Dxa bone density measurement of hip, pelvis, spine | 29 | 29 | $44 | |
82962 |
Blood glucose (sugar) test performed by hand-held instrument | 23 | 19 | $3 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 20 | 18 | $62 |
In context: peer comparison
Among 1 peers in Petaluma Endocrinology, Diabetes & Metabolism Physician, average services per provider: 158. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$1,791
Transactions
72
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 21 | $545.33 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 6 | $151.50 | |
| Pfizer INC. | 8 | $142.49 | |
| Abbvie INC. | 6 | $138.94 | |
| Astellas Pharma US INC | 3 | $132.10 | |
| Xeris Pharmaceuticals, INC. | 5 | $106.94 | |
| Novo Nordisk INC | 5 | $97.16 | |
| Bayer Healthcare Pharmaceuticals INC. | 4 | $85.50 | |
| Amgen INC. | 3 | $78.93 | |
| Radius Health, INC. | 3 | $62.70 | |
| Lexicon Pharmaceuticals, INC. | 2 | $57.83 | |
| Dexcom, INC. | 2 | $48.09 | |
| Acella Pharmaceuticals, LLC | 2 | $48.05 | |
| Abbott Laboratories | 1 | $28.15 | |
| Alexion Pharmaceuticals, INC. | 1 | $27.07 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,350
Patients
305
Total drug cost
$372,012
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 212 | 43 | $4,601 |
| Atorvastatin Calcium | Generic | 161 | 37 | $1,809 |
| Mounjaro (Tirzepatide) | Brand | 141 | 29 | $169,128 |
| Potassium Chloride | Generic | 129 | 38 | $5,771 |
| Amlodipine Besylate | Generic | 101 | 18 | $566 |
| Ozempic (Semaglutide) | Brand | 86 | 20 | $116,311 |
| Losartan Potassium | Generic | 74 | 20 | $1,264 |
| Metoprolol Succinate | Generic | 64 | 14 | $1,439 |
| Ursodiol | Generic | 64 | 18 | $5,969 |
| Rosuvastatin Calcium | Generic | 57 | 14 | $2,199 |
Hospital affiliations
Frequently asked questions
What is Dr. David Chappell's medical specialty?
Dr. David Chappell practices Endocrinology, Diabetes & Metabolism Physician in Petaluma, CA.
Where does Dr. David Chappell practice?
Dr. David Chappell practices at 141 Lynch Creek Way, Petaluma, CA 94954. Office phone: 7077620001.
What is Dr. David Chappell's NPI?
Dr. David Chappell's National Provider Identifier (NPI) is 1598732463, issued by NPPES.
Does Dr. David Chappell accept Medicare assignment?
Yes. Dr. David Chappell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Chappell commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.