DR. MARK DEAN SNYDER M.D.
NPI 1790778587
Anesthesiology in Hannibal, MO
About Dr. Mark Dean Snyder M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK DEAN SNYDER M.D. (NPI 1790778587) is an individual anesthesiology provider in Hannibal, Missouri, licensed in Connecticut (66415) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Northeast Regional Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Mark Dean Snyder M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
8Medicare enrollment records show Mark Snyder reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hannibal, MO 63401
- Reassigned Medicare billing, Missouri enrollment
- 196 clinicians in this Medicare group
Saint Louis, MO 63136
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Midwest Anesthesia Providers Sc
- 230 clinicians in this Medicare group
Kansas City, MO 64154
- Reassigned Medicare billing, Missouri enrollment
- 50 clinicians in this Medicare group
Poplar Bluff, MO 63901
- Reassigned Medicare billing, Missouri enrollment
- 102 clinicians in this Medicare group
Janesville, WI 53548
- Reassigned Medicare billing, Wisconsin enrollment
- 1,155 clinicians in this Medicare group
Green Bay, WI 54311
- Reassigned Medicare billing, Wisconsin enrollment
- 275 clinicians in this Medicare group
Putnam, CT 06260
- Reassigned Medicare billing, Connecticut enrollment
- 225 clinicians in this Medicare group
Ketchikan, AK 99901
- Reassigned Medicare billing, Alaska enrollment
- 133 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northeast Regional Medical Center
Acute Care Hospitals · Kirksville, MOHannibal Regional Hospital
Acute Care Hospitals · Hannibal, MOOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HANNIBAL, MO 63401
HANNIBAL, MO 63401
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mark Snyder's NPI number?
The NPI number for Mark Snyder is 1790778587. It was assigned to this individual provider in the NPPES registry on August 26, 2005.
Where is Mark Snyder located?
Mark Snyder practices at 6000 Hospital Dr, Hannibal, MO 63401. The listed phone number is (573) 248-5115.
What is Mark Snyder's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mark Snyder enrolled in Medicare?
Yes. Mark Snyder is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mark Snyder's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Snyder reassigns Medicare benefits to 8 organizations: Hannibal Regional Healthcare System Inc (Hannibal, MO), Midwest Anesthesia Providers S.C (Saint Louis, MO), Guardian Anesthesia Specialists, LLC (Kansas City, MO), Missouri Hb Medical Services, LLC (Poplar Bluff, MO), Mercy Health System Corporation (Janesville, WI) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Snyder's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Snyder accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Mark Snyder as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mark Snyder affiliated with any hospitals?
According to CMS data, Mark Snyder is affiliated with Northeast Regional Medical Center and Hannibal Regional Hospital.
When was this NPI record last updated?
The NPPES record for Mark Snyder was last updated on June 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Mark Dean Snyder, M.D. · NPI 1790778587
Anesthesiology physician in Hannibal, Missouri. Individual provider, active in the CMS NPPES registry since August 26, 2005.
## Identity
- **NPI:** 1790778587 (Entity type: Individual)
- **Enumerated:** August 26, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 66415 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 6000 HOSPITAL DR, Hannibal, MO 63401-6887
- **Phone:** (573) 248-5115 · **Fax:** (573) 248-5196
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Hannibal Regional Healthcare System Inc (NPI 1003956095, Hannibal, MO); Midwest Anesthesia Providers S.C (NPI 1295189082, Saint Louis, MO); Guardian Anesthesia Specialists, LLC (NPI 1740611789, Kansas City, MO); Missouri Hb Medical Services, LLC (NPI 1922868462, Poplar Bluff, MO); Mercy Health System Corporation (NPI 1598718603, Janesville, WI); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kansas School Of Med, class of 1985
## Record status
- **NPPES last updated:** June 26, 2026
- **Other identifiers:** Medicaid 35345000 (WI); Medicaid 208986505 (MO); Medicaid 008097491 (CT); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1790778587) · Data from the CMS NPPES public registry.