Doctor profile · Federal record
Dr. Richard Bertenshaw, MD
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Darien, IL
- NPI 1992721898
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
7545 Wilton RD
Darien, IL 605616702
(708) 921-6053
fax (877) 992-6901
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- August 3, 2021
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Illinois #036074851
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992721898. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
102
Distinct HCPCS
2
Medicare allowed
$14,292
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 88 | 43 | $134 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 14 | 14 | $176 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 51. This provider delivers 2.0× the peer median.Open Payments
Industry payments received
All-time total
$44
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk Inc | 1 | $25.00 | |
| GlaxoSmithKline, LLC. | 1 | $19.13 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
186
Patients
26
Total drug cost
$170,286
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 60 | 14 | $628 |
| Jardiance (Empagliflozin) | Brand | 44 | 12 | $58,248 |
| Trulicity (Dulaglutide) | Brand | 30 | 0 | $50,016 |
| Ozempic (Semaglutide) | Brand | 24 | 0 | $55,255 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 16 | 0 | $499 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 12 | 0 | $5,639 |
Hospital affiliations
Frequently asked questions
What is Dr. Richard Bertenshaw's medical specialty?
Dr. Richard Bertenshaw practices Endocrinology, Diabetes & Metabolism Physician in Darien, IL.
Where does Dr. Richard Bertenshaw practice?
Dr. Richard Bertenshaw practices at 7545 Wilton RD, Darien, IL 605616702. Office phone: 7089216053.
What is Dr. Richard Bertenshaw's NPI?
Dr. Richard Bertenshaw's National Provider Identifier (NPI) is 1992721898, issued by NPPES.
Does Dr. Richard Bertenshaw accept Medicare assignment?
Yes. Dr. Richard Bertenshaw accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Richard Bertenshaw commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.