What is Nancy Mark's NPI number?

Nancy Mark's National Provider Identifier (NPI) is 1225398860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Nancy Mark's specialty?

Nancy Mark is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).

Where is Nancy Mark located?

Nancy Mark's practice location on file with NPPES is 633 Roanoke Ave, Riverhead, NY 11901-2727.

What is Nancy Mark's phone number?

The practice phone number listed in the NPPES registry for Nancy Mark is (631) 727-3795.

Does Nancy Mark accept Medicare?

Nancy Mark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Nancy Mark's NPI active?

Yes — Nancy Mark's NPI (1225398860) is active in the NPPES registry as of the last update on 2020-03-10.

IndividualActiveAccepts Medicare

Nancy Mark, D.C.

NPI 1225398860 · Chiropractor · Riverhead, NY

Nancy Mark, D.C. is a Chiropractor provider in Riverhead, NY (NPI 1225398860).

Provider details

NPI number: 1225398860
Entity type: Individual
Primary specialty: ChiropractorChiropractic Providers
Credential: D.C.
Sex: Female
Sole proprietor: No
License: X007378-1 (NY)

Practice location

633 Roanoke Ave

Pulaski St. (corner)

Riverhead, NY 11901-2727

Phone: (631) 727-3795

Street-level locationGet directions

More NY providers

Mailing address

633 Roanoke Ave

Riverhead, NY 11901-2727

Specialties & taxonomies

ChiropractorPrimary111N00000XLicense X007378-1 (NY)
Chiropractic Providers

Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(73/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
14 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
619 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Chiropractic Manipulative Treatment, 1-2 Spinal Regions98940	619	$30

Typical Medicare-allowed amounts for these services range $30–$30 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Enumerated: 2012-05-16
Last updated: 2020-03-10
Certified: 2020-03-10

Frequently asked questions

What is Nancy Mark's NPI number?: Nancy Mark's National Provider Identifier (NPI) is 1225398860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Nancy Mark's specialty?: Nancy Mark is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
Where is Nancy Mark located?: Nancy Mark's practice location on file with NPPES is 633 Roanoke Ave, Riverhead, NY 11901-2727.
What is Nancy Mark's phone number?: The practice phone number listed in the NPPES registry for Nancy Mark is (631) 727-3795.
Does Nancy Mark accept Medicare?: Nancy Mark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Nancy Mark's NPI active?: Yes — Nancy Mark's NPI (1225398860) is active in the NPPES registry as of the last update on 2020-03-10.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)