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DR. ELIZABETH P HAMMER M.D.
NPI 1073540886
Pediatrics in Union, MO

Active since June 27, 2006PECOS Enrolled
1935 PRAIRIE DELL RD STE 400, UNION, MO 63084(636) 649-3085(363) 649-3087 Get Directions Write a Review

NPPES record last updated: June 24, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Elizabeth P Hammer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ELIZABETH P HAMMER M.D. (NPI 1073540886) is an individual pediatrics provider in Union, Missouri, licensed in Missouri (2003020132) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Union.

NPPES Registry Identity

NPI1073540886
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. ELIZABETH P HAMMERCredential: M.D.
Location Address1935 PRAIRIE DELL RD STE 400Union, MO 63084-4327
Mailing AddressPo Box 776084Chicago, IL 60677-6084 · (636) 649-3085 · Fax (636) 649-3087
Phone(636) 649-3085
Fax(363) 649-3087
Sole ProprietorNo
Enumeration DateJune 27, 2006
Last NPPES UpdateJune 24, 2024
NPPES CertifiedJune 24, 2024
✔ NPI 1073540886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MO · 2003020132
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1935 PRAIRIE DELL RD STE 400, Union, MO 63084
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Secondary Practice Location 1

Location 197 Saint Andrews DrUnion, MO 63084-4546 · Phone (636) 583-2946 · Fax (636) 583-6131

Other Identifiers 1

Medicaid207243809MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elizabeth P Hammer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Elizabeth Hammer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mercy Clinic East Communities
18 mi
Rural Health
1326 S SERVICE RD W STE 20
Sullivan, MO 63080
  • Reassigned Medicare billing, Missouri enrollment
  • 228 clinicians in this Medicare group
NPI 1467716928 (573) 468-3555

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63084 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$81.64 typical visit price
range $52.28 – $161.24
Typical copayment $20.41 (range $13.07 – $40.31)
Most-billed visit code 99203
Established Patient
$93.24 typical visit price
range $16.30 – $131.05
Typical copayment $23.31 (range $4.07 – $32.76)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. SARAH CHALK APRN, FNP-BC
Nurse Practitioner (Family)
1935 PRAIRIE DELL RD STE 400
UNION, MO 63084
Franklin County (636) 649-3085
DR. JOI C IRVING M.D.
Internal Medicine
1935 PRAIRIE DELL RD STE 400
UNION, MO 63084
Franklin County (636) 583-2508
DR. GRETCHEN ELIZABETH FARMER MD
Internal Medicine
1935 PRAIRIE DELL RD STE 400
UNION, MO 63084
Franklin County (636) 649-3085
CASEY LYNN BUNCHER FNP-C
Nurse Practitioner (Family)
1935 PRAIRIE DELL RD STE 400
UNION, MO 63084
Franklin County (636) 649-3085

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 Elizabeth Hammer's NPI number?

The NPI number for Elizabeth Hammer is 1073540886. It was assigned to this individual provider in the NPPES registry on June 27, 2006.

Where is Elizabeth Hammer located?

Elizabeth Hammer practices at 1935 Prairie Dell Rd Ste 400, Union, MO 63084. The listed phone number is (636) 649-3085.

What is Elizabeth Hammer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Elizabeth Hammer enrolled in Medicare?

Yes. Elizabeth Hammer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Hammer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Hammer reassigns Medicare benefits to Mercy Clinic East Communities (Sullivan, 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 Elizabeth Hammer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elizabeth Hammer 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 3 other insurers list Elizabeth Hammer 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.

When was this NPI record last updated?

The NPPES record for Elizabeth Hammer was last updated on June 24, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.