Doctor profile · Federal record
Dr. Matthew Nienaber, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Santa Monica, CA
- NPI 1033535182
- Accepts Medicare
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1821 Wilshire Blvd Ste 100
Santa Monica, CA 904035627
(310) 575-3100
fax (310) 575-3102
Credentials & registration
- NPI registered
- March 2014 — 12 yrs on file
- Profile last updated
- April 19, 2021
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A14759
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033535182. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
426
Distinct HCPCS
10
Medicare allowed
$43,559
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 148 | 84 | $141 | |
36415 |
Insertion of needle into vein for collection of blood sample | 108 | 79 | $8 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 49 | 36 | $197 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 27 | 23 | $100 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 27 | 27 | $144 | |
G0008 |
Administration of influenza virus vaccine | 16 | 15 | $34 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 14 | 14 | $16 | |
G0009 |
Administration of pneumococcal vaccine | 13 | 13 | $34 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 12 | 12 | $282 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 12 | 12 | $76 |
In context: peer comparison
Among 58 peers in this city , average services per provider: 97. This provider delivers 4.4× the peer median.Open Payments
Industry payments received
All-time total
$329
Transactions
14
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 6 | $128.11 | |
| Lilly USA, LLC | 3 | $76.29 | |
| Amgen Inc. | 2 | $45.76 | |
| Merck Sharp & Dohme LLC | 1 | $30.45 | |
| PFIZER INC. | 1 | $27.32 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $21.48 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,092
Patients
349
Total drug cost
$22,291
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 216 | 71 | $4,976 |
| Gabapentin | Generic | 88 | 27 | $1,979 |
| Losartan Potassium | Generic | 87 | 33 | $2,431 |
| Alprazolam | Generic | 85 | 23 | $757 |
| Amlodipine Besylate | Generic | 83 | 27 | $1,140 |
| Levothyroxine Sodium | Generic | 81 | 25 | $2,034 |
| Lisinopril | Generic | 76 | 21 | $1,291 |
| Omeprazole | Generic | 58 | 20 | $1,608 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 57 | 11 | $953 |
| Metformin Hcl | Generic | 56 | 20 | $878 |
Frequently asked questions
What is Dr. Matthew Nienaber's medical specialty?
Dr. Matthew Nienaber practices Internal Medicine Physician in Santa Monica, CA.
Where does Dr. Matthew Nienaber practice?
Dr. Matthew Nienaber practices at 1821 Wilshire Blvd Ste 100, Santa Monica, CA 904035627. Office phone: 3105753100.
What is Dr. Matthew Nienaber's NPI?
Dr. Matthew Nienaber's National Provider Identifier (NPI) is 1033535182, issued by NPPES.
Does Dr. Matthew Nienaber accept Medicare assignment?
Yes. Dr. Matthew Nienaber accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Matthew Nienaber commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.