ZACHARY ADAM HAMILTON M.D.
NPI 1962727875
Urology in Saint Louis, MO
About Zachary Adam Hamilton M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ZACHARY ADAM HAMILTON M.D. (NPI 1962727875) is an individual urology provider in Saint Louis, Missouri, licensed in Missouri (2017002244) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital -centralia, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Zachary Adam Hamilton 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 Reassignment
Medicare enrollment records show Zachary Hamilton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 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 11
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm Health St Mary's Hospital -Centralia
Acute Care Hospitals · Centralia, ILSsm St Clare Health Center
Acute Care Hospitals · Fenton, MOSsm Health St Mary's Hospital - St Louis
Acute Care Hospitals · Richmond Heights, MOSsm Health Saint Louis University Hospital
Acute Care Hospitals · Saint Louis, MOCarolinas Medical Center/Behav Health
Acute Care Hospitals · Charlotte, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 7
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Zachary Hamilton's NPI number?
The NPI number for Zachary Hamilton is 1962727875. It was assigned to this individual provider in the NPPES registry on April 2, 2010.
Where is Zachary Hamilton located?
Zachary Hamilton practices at 3655 Vista Ave, Saint Louis, MO 63110. The listed phone number is (314) 977-4440.
What is Zachary Hamilton's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Zachary Hamilton enrolled in Medicare?
Yes. Zachary Hamilton 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 organization bills Medicare for Zachary Hamilton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Hamilton reassigns Medicare benefits to Ssm Health Care Group (Saint Louis, MO). The 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 Zachary Hamilton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Zachary Hamilton accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Zachary Hamilton 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 Zachary Hamilton affiliated with any hospitals?
According to CMS data, Zachary Hamilton is affiliated with Ssm Health St Mary's Hospital -Centralia, Ssm St Clare Health Center, Ssm Health St Mary's Hospital - St Louis, Ssm Health Saint Louis University Hospital and Carolinas Medical Center/Behav Health.
When was this NPI record last updated?
The NPPES record for Zachary Hamilton was last updated on February 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Zachary Adam Hamilton, M.D. · NPI 1962727875
Urology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 2, 2010.
## Identity
- **NPI:** 1962727875 (Entity type: Individual)
- **Enumerated:** April 2, 2010
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** 2017002244 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3655 VISTA AVE, Saint Louis, MO 63110-2539
- **Phone:** (314) 977-4440 · **Fax:** (314) 977-1642
## 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:** Ssm Health Care Group (NPI 1306589544, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri, Columbia School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** February 2, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1962727875) · Data from the CMS NPPES public registry.