DR. JAQUELYN F FLECKENSTEIN MD
NPI 1386600864
Internal Medicine - Gastroenterology in Saint Louis, MO
About Dr. Jaquelyn F Fleckenstein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAQUELYN F FLECKENSTEIN MD (NPI 1386600864) is an individual gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (2012005908) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and is a graduate of Saint Louis University School Of Medicine (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Dr. Jaquelyn F Fleckenstein 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.
Medicare Billing Reassignment
Medicare enrollment records show Jaquelyn Fleckenstein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 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 9
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.
Alton Memorial Hospital
Acute Care Hospitals · Alton, ILMemorial Hospital
Acute Care Hospitals · Belleville, ILBarnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOMissouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOBarnes-Jewish West County Hospital
Acute Care Hospitals · Creve Coeur, MOPhysician 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
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Jaquelyn Fleckenstein's NPI number?
The NPI number for Jaquelyn Fleckenstein is 1386600864. It was assigned to this individual provider in the NPPES registry on April 25, 2006.
Where is Jaquelyn Fleckenstein located?
Jaquelyn Fleckenstein practices at 4921 Parkview Pl Div Im Gastroenterology, Ste 12B, Saint Louis, MO 63110. The listed phone number is (314) 747-2066.
What is Jaquelyn Fleckenstein's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Jaquelyn Fleckenstein enrolled in Medicare?
Yes. Jaquelyn Fleckenstein 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 Jaquelyn Fleckenstein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jaquelyn Fleckenstein reassigns Medicare benefits to Washington University (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 Jaquelyn Fleckenstein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jaquelyn Fleckenstein accept?
Health plans from Cox HealthPlans and UnitedHealthcare list Jaquelyn Fleckenstein 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 Jaquelyn Fleckenstein affiliated with any hospitals?
According to CMS data, Jaquelyn Fleckenstein is affiliated with Alton Memorial Hospital, Memorial Hospital, Barnes Jewish Hospital, Missouri Baptist Medical Center and Barnes-Jewish West County Hospital.
When was this NPI record last updated?
The NPPES record for Jaquelyn Fleckenstein was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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. Jaquelyn F Fleckenstein, MD · NPI 1386600864
Gastroenterology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 25, 2006.
## Identity
- **NPI:** 1386600864 (Entity type: Individual)
- **Enumerated:** April 25, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 2012005908 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 4921 PARKVIEW PL, DIV IM GASTROENTEROLOGY, STE 12B, Saint Louis, MO 63110-1032
- **Phone:** (314) 747-2066 · **Fax:** (314) 747-7111
## 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:** Washington University (NPI 1992746903, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 1985
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 204999700 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1386600864) · Data from the CMS NPPES public registry.