John Gavencak, DC
NPI 1104911262 · Chiropractor · Center Moriches, NY
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Gavencak, DC is a Chiropractor provider in Center Moriches, NY (NPI 1104911262).
Provider details
- NPI number
- 1104911262
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- DC
- Sex
- Male
- Sole proprietor
- No
- License
- X010539 (NY)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
1,773 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 | 1,773 | $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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2009-02-10
Frequently asked questions
- What is John Gavencak's NPI number?
- John Gavencak's National Provider Identifier (NPI) is 1104911262, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gavencak's specialty?
- John Gavencak is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is John Gavencak located?
- John Gavencak's practice location on file with NPPES is 326 Main St, Center Moriches, NY 11934-3509.
- What is John Gavencak's phone number?
- The practice phone number listed in the NPPES registry for John Gavencak is (631) 399-8888.
- Does John Gavencak accept Medicare?
- John Gavencak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Gavencak's NPI active?
- Yes — John Gavencak's NPI (1104911262) is active in the NPPES registry as of the last update on 2009-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.