Doctor profile · Federal record
Dr. Nancy Mark, D.C.
Chiropractor (CMS: Chiropractic) · Riverhead, NY
- NPI 1225398860
- Accepts Medicare
- 33 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
633 Roanoke Ave, Pulaski St. (Corner)
Riverhead, NY 119012727
(631) 727-3795
Credentials & registration
- NPI registered
- May 2012 — 14 yrs on file
- Profile last updated
- March 10, 2020
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 111N00000X — NUCC code
- State license (1)
- New York #X007378-1
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225398860. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
433
Distinct HCPCS
1
Medicare allowed
$13,487
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
98940 |
Chiropractic manipulative treatment, 1-2 spinal regions | 433 | 37 | $31 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 464. This provider delivers 0.9× the peer median.Frequently asked questions
What is Dr. Nancy Mark's medical specialty?
Dr. Nancy Mark practices Chiropractor in Riverhead, NY.
Where does Dr. Nancy Mark practice?
Dr. Nancy Mark practices at 633 Roanoke Ave, Riverhead, NY 119012727. Office phone: 6317273795.
What is Dr. Nancy Mark's NPI?
Dr. Nancy Mark's National Provider Identifier (NPI) is 1225398860, issued by NPPES.
Does Dr. Nancy Mark accept Medicare assignment?
Yes. Dr. Nancy Mark accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Mark commonly perform?
Top Medicare-reported procedures in 2023: Chiropractic manipulative treatment, 1-2 spinal regions (HCPCS 98940). Source: CMS Medicare Physician & Other Practitioners file.