Doctor profile · Federal record
Dr. Peter Siefken, PA
Medical Physician Assistant (CMS: Physician Assistant) · Amagansett, NY
- NPI 1144347261
- Accepts Medicare
- MIPS 85.0 / 100 · 2023
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
518 Montauk Hwy, Ste 102
Amagansett, NY 11930
(631) 267-5373
fax (631) 267-5376 - Mailing address
-
57 Hampton Road, Ste 201
Southampton, NY 11968
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- December 5, 2016
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State license (1)
- New York #005732
- Medicaid
- NY #02175175
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144347261. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
846
Distinct HCPCS
10
Medicare allowed
$53,413
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 393 | 351 | $89 | |
87426 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 79 | 79 | $35 | |
87804 |
Detection test by immunoassay with direct visual observation for influenza virus | 58 | 29 | $16 | |
87880 |
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | 58 | 58 | $16 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 42 | 42 | $73 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 35 | 34 | $127 | |
81003 |
Automated urinalysis test | 32 | 31 | $2 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 32 | 32 | $113 | |
96372 |
Injection of drug or substance under skin or into muscle | 25 | 25 | $14 | |
J1030 |
Injection, methylprednisolone acetate, 40 mg | 25 | 24 | $8 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 60. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
328
Patients
303
Total drug cost
$3,633
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Doxycycline Hyclate | Generic | 61 | 57 | $986 |
| Azithromycin | Generic | 57 | 53 | $394 |
| Methylprednisolone | Generic | 38 | 36 | $311 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 22 | 22 | $186 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 22 | 20 | $281 |
| Prednisone | Generic | 22 | 22 | $26 |
| Cefdinir | Generic | 21 | 19 | $560 |
| Ofloxacin | Generic | 20 | 20 | $319 |
| Mupirocin | Generic | 17 | 17 | $157 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 15 | 15 | $162 |
Frequently asked questions
What is Dr. Peter Siefken's medical specialty?
Dr. Peter Siefken practices Medical Physician Assistant in Amagansett, NY.
Where does Dr. Peter Siefken practice?
Dr. Peter Siefken practices at 518 Montauk Hwy, Amagansett, NY 11930. Office phone: 6312675373.
What is Dr. Peter Siefken's NPI?
Dr. Peter Siefken's National Provider Identifier (NPI) is 1144347261, issued by NPPES.
Does Dr. Peter Siefken accept Medicare assignment?
Yes. Dr. Peter Siefken accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Peter Siefken commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (HCPCS 87426); Detection test by immunoassay with direct visual observation for influenza virus (HCPCS 87804). Source: CMS Medicare Physician & Other Practitioners file.