Doctor profile · Federal record
Dr. William Klein, MD
Internal Medicine Physician (CMS: Internal Medicine) · Newport Beach, CA
- NPI 1205834819
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 60 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1501 Superior Ave, #111
Newport Beach, CA 926633600
(949) 274-8030
fax (949) 642-3127
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- January 17, 2008
- Year of graduation
- 1966 — 60 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G14712
- Medicaid
- CA #00G147120
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205834819. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,726
Distinct HCPCS
8
Medicare allowed
$213,522
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 777 | 257 | $140 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 227 | 227 | $142 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 222 | 216 | $196 | |
94010 |
Test to measure expiratory airflow and volume | 180 | 131 | $31 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 174 | 160 | $16 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 67 | 67 | $181 | |
G0328 |
Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous | 54 | 54 | $18 | |
99496 |
Transitional care management services for problem of high complexity | 25 | 21 | $306 |
In context: peer comparison
Among 25 peers in Newport Beach Internal Medicine Physician, average services per provider: 357. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$2,071
Transactions
88
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 18 | $277.88 | |
| Genzyme Corporation | 9 | $239.56 | |
| Abbvie INC. | 9 | $179.25 | |
| Amgen INC. | 8 | $151.61 | |
| Novartis Pharmaceuticals Corporation | 6 | $150.40 | |
| Lilly USA, LLC | 6 | $138.68 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 7 | $123.95 | |
| Takeda Pharmaceuticals U.S.A., INC. | 5 | $121.00 | |
| Inari Medical, INC. | 4 | $98.82 | |
| Insmed, INC. | 4 | $87.91 | |
| Grifols USA, LLC | 3 | $69.46 | |
| Regeneron Healthcare Solutions, INC. | 2 | $65.98 | |
| Vifor Pharma, INC. | 3 | $54.30 | |
| Astellas Pharma US INC | 2 | $48.30 | |
| Pfizer INC. | 2 | $44.42 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,573
Patients
851
Total drug cost
$310,978
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 285 | 65 | $276,958 |
| Levothyroxine Sodium | Generic | 269 | 71 | $4,576 |
| Atorvastatin Calcium | Generic | 244 | 74 | $3,074 |
| Amlodipine Besylate | Generic | 213 | 57 | $1,565 |
| Montelukast Sodium | Generic | 195 | 54 | $4,898 |
| Azithromycin | Generic | 173 | 108 | $997 |
| Rosuvastatin Calcium | Generic | 158 | 50 | $5,296 |
| Tamsulosin Hcl | Generic | 155 | 43 | $3,815 |
| Pantoprazole Sodium | Generic | 154 | 39 | $2,303 |
| Lisinopril | Generic | 152 | 46 | $1,420 |
Hospital affiliations
Frequently asked questions
What is Dr. William Klein's medical specialty?
Dr. William Klein practices Internal Medicine Physician in Newport Beach, CA.
Where does Dr. William Klein practice?
Dr. William Klein practices at 1501 Superior Ave, Newport Beach, CA 926633600. Office phone: 9492748030.
What is Dr. William Klein's NPI?
Dr. William Klein's National Provider Identifier (NPI) is 1205834819, issued by NPPES.
Does Dr. William Klein accept Medicare assignment?
Yes. Dr. William Klein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Klein 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 99215). Source: CMS Medicare Physician & Other Practitioners file.