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DR. SIRI ANCHA MD
NPI 1700370863
Internal Medicine - Gastroenterology in Chesterfield, MO

Active since June 21, 2018PECOS EnrolledAccepts Medicare Assignment
17298 N OUTER 40 RD STE 200, CHESTERFIELD, MO 63005(314) 529-4900(314) 434-2679 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 6, 2026, Apr 4, 2022, Jan 19, 2022 and 2 more (5 updates tracked since 2018).

About Dr. Siri Ancha Md NPPES

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

DR. SIRI ANCHA MD (NPI 1700370863) is an individual gastroenterology provider in Chesterfield, Missouri, licensed in Missouri (2020042128) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS, is affiliated with Missouri Baptist Medical Center, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1700370863
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. SIRI ANCHACredential: MD
Location Address17298 N OUTER 40 RD STE 200Chesterfield, MO 63005-1456
Mailing Address17298 N Outer 40 Rd Ste 200Chesterfield, MO 63005-1456 · (314) 529-4900 · Fax (314) 434-2679
Phone(314) 529-4900
Fax(314) 434-2679
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateJune 21, 2018
Last NPPES UpdateAugust 6, 20265 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1700370863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in MO · 2020042128
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
17298 N OUTER 40 RD STE 200, Chesterfield, MO 63005
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Other Identifiers 1

Medicaid200060948MO

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 and accepts Medicare assignment

Dr. Siri Ancha Md 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.

PECOS PAC ID3870925746
PECOS Enrollment IDI20210726002508
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 Reassignments

2

Medicare enrollment records show Siri Ancha reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gateway Gastroenterology Inc
Same address
Specialist
17298 N OUTER 40 RD STE 200
Chesterfield, MO 63005
  • Reassigned Medicare billing, Missouri enrollment
  • 26 clinicians in this Medicare group
NPI 1043250400 (314) 529-4900
Washington University
18 mi
Multi-Specialty
660 S EUCLID AVE
Saint Louis, MO 63110
  • Reassigned Medicare billing, Missouri enrollment
  • 1,133 clinicians in this Medicare group
NPI 1992746903 (314) 747-5192

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

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Barnes-Jewish West County Hospital

Acute Care Hospitals · Creve Coeur, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260162
Location12634 Olive BoulevardCreve Coeur, MO 63141 · St. Louis County
Emergency services

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63005 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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 12

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

CHRISTI HUGUET CRNA
Nurse Anesthetist, Certified Registered
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
GATEWAY GASTROENTEROLOGY INC
Specialist
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
TIMOTHY P. BROTHERTON JR. MD
Internal Medicine (Gastroenterology)
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
SUSAN J MENNER CRNA
Nurse Anesthetist, Certified Registered
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
DR. RAJEEV RAMGOPAL MD
Internal Medicine (Gastroenterology)
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
SARAH KEIM
Nurse Practitioner (Family)
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
KAITLIN SCHILD AGNP-C
Nurse Practitioner
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900
FRED HARRISON WILLIAMS MD
Internal Medicine (Gastroenterology)
17298 N OUTER 40 RD STE 200
CHESTERFIELD, MO 63005
St. Louis County (314) 529-4900

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 Siri Ancha's NPI number?

The NPI number for Siri Ancha is 1700370863. It was assigned to this individual provider in the NPPES registry on June 21, 2018.

Where is Siri Ancha located?

Siri Ancha practices at 17298 N Outer 40 Rd Ste 200, Chesterfield, MO 63005. The listed phone number is (314) 529-4900.

What is Siri Ancha's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Siri Ancha enrolled in Medicare?

Yes. Siri Ancha 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 Siri Ancha's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siri Ancha reassigns Medicare benefits to 2 organizations: Gateway Gastroenterology Inc (Chesterfield, MO) and Washington University (Saint Louis, MO). 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 Siri Ancha's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Siri Ancha 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 Siri Ancha 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 Siri Ancha affiliated with any hospitals?

According to CMS data, Siri Ancha is affiliated with Missouri Baptist Medical Center, Barnes-Jewish West County Hospital and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Siri Ancha was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.