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DIGESTIVE CONSULTANTS LLC
NPI 1013414317
Internal Medicine - Gastroenterology in O Fallon, MO

Active since April 12, 2018
5551 WINGHAVEN BLVD STE 250, O FALLON, MO 63368(636) 685-7795(314) 590-5959 Get Directions Write a Review

NPPES record last updated: February 20, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 12, 2025, Nov 3, 2022, Oct 6, 2022 and 6 more (9 updates tracked since 2018).

About Digestive Consultants Llc NPPES

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

DIGESTIVE CONSULTANTS LLC (NPI 1013414317) is a healthcare organization registered as a gastroenterology in O Fallon, Missouri and active in the NPI registry since April 2018. The organization maintains a secondary practice location in Chesterfield and lists Darren R. Haskell, Chief Medical Officer, as its authorized official.

NPPES Registry Identity

NPI1013414317
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameDIGESTIVE CONSULTANTS LLC
Location Address5551 WINGHAVEN BLVD STE 250O Fallon, MO 63368-3630
Mailing Address224 S Woods Mill Rd Ste 410sChesterfield, MO 63017-3605 · (636) 685-7795 · Fax (314) 590-5959
Phone(636) 685-7795
Fax(314) 590-5959
Organization SubpartYesParent: St. Lukes Medical Group
Authorized OfficialDarren R. HaskellChief Medical Officer · (314) 205-6444
Enumeration DateApril 12, 2018
Last NPPES UpdateFebruary 20, 20269 updates tracked since enumeration
NPPES CertifiedFebruary 20, 2026
✔ NPI 1013414317 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
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.
5551 WINGHAVEN BLVD STE 250, O Fallon, MO 63368
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Secondary Practice Location 1

Location 1224 S Woods Mill Rd Ste 610Chesterfield, MO 63017-3513 · Phone (636) 685-7795

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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 and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Digestive Consultants Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

14

Medicare enrollment records show 14 clinicians reassign Medicare billing to Digestive Consultants LLC, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Nurse Practitioner7
Gastroenterology6
Internal Medicine1

Clinicians, nearest first (14)

Jennifer Humphrey, APRN, FNP-C
Nurse Practitioner
NPI 1639642986
70 JUNGERMANN CIR STE 201
Saint Peters, MO 63376
(636) 344-1073
✔ PECOS✔ Accepts Medicare9.5 mi
Lorie Campbell
Nurse Practitioner
NPI 1831552728
224 S WOODS MILL RD STE 410S
Chesterfield, MO 63017
(636) 685-7795
✔ PECOS✔ Accepts Medicare15 mi
Elie Chahla, MD
Gastroenterology
NPI 1205082633
224 S WOODS MILL RD STE 410S
Chesterfield, MO 63017
(366) 857-7956
✔ PECOS✔ Accepts Medicare15 mi
Sajid Zafar, M.D.
Gastroenterology
NPI 1538274428
224 S WOODS MILL RD STE 410
Chesterfield, MO 63017
(636) 685-7795
✔ PECOS✔ Accepts Medicare15 mi
Jessica Alvarez
Nurse Practitioner
NPI 1053152793
224 S WOODS MILL RD STE 610
Chesterfield, MO 63017
(636) 685-7795
✔ PECOS✔ Accepts Medicare15 mi
Tanya Harte, FNP
Nurse Practitioner
NPI 1083270797
3015 N BALLAS RD DIV ANES PAIN MGT
Saint Louis, MO 63131
(314) 996-7200
✔ PECOS✔ Accepts Medicare18 mi
Tariq Hassan, MD
Gastroenterology
NPI 1710970587
1 BARNES JEWISH HOSPITAL PLZ DIV IM GASTROENTEROLOGY
Saint Louis, MO 63110
(314) 747-2066
✔ PECOS✔ Accepts Medicare21 mi
Nita Eggers, FNP
Nurse Practitioner
NPI 1497991012
1 BARNES JEWISH HOSPITAL PLZ DIV SURG UROLOGY
Saint Louis, MO 63110
(314) 362-8200
✔ PECOS✔ Accepts Medicare27 mi
Yan Chu, MD
Internal Medicine
NPI 1538629241
1225 S GRAND BLVD
Saint Louis, MO 63104
(314) 977-4440
✔ PECOS✔ Accepts Medicare29 mi
Rehan Rafiq, M.D.
Gastroenterology
NPI 1407924954
1390 US HIGHWAY 61 STE N3300
Festus, MO 63028
(636) 937-8675
✔ PECOS✔ Accepts Medicare43 mi
Anjana Aggarwal, MD
Gastroenterology
NPI 1467436899
200 HAWKINS DR
Iowa City, IA 52242
(319) 356-4901
✔ PECOS✔ Accepts Medicare205 mi
Lauren King
Nurse Practitioner
NPI 1306677273
635 N FAIRBANKS CT
Chicago, IL 60611
(312) 472-4260
✔ PECOS✔ Accepts Medicare272 mi
Roshan Shrestha, MD
Gastroenterology
NPI 1427191782
1968 PEACHTREE RD NW 77 BUILDING 5TH FLOOR
Atlanta, GA 30309
(404) 605-4600
✔ PECOS✔ Accepts Medicare492 mi
Melissa Hall, APRN, MSN, FNP-C
Nurse Practitioner
NPI 1417696816
3778 MEDINA RD
Medina, OH 44256
(330) 764-3457
✔ PECOS501 mi

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

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 Digestive Consultants LLC's NPI number?

The NPI number for Digestive Consultants LLC is 1013414317. It was assigned to this organization in the NPPES registry on April 12, 2018.

Where is Digestive Consultants LLC located?

Digestive Consultants LLC is located at 5551 Winghaven Blvd Ste 250, O Fallon, MO 63368. The listed phone number is (636) 685-7795.

What is Digestive Consultants LLC's specialty?

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

Is Digestive Consultants LLC enrolled in Medicare?

Yes. Digestive Consultants LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Digestive Consultants LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 3 Medicare specialties reassign their Medicare billing to Digestive Consultants LLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (7), Gastroenterology (6) and Internal Medicine (1). Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Digestive Consultants LLC 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 Digestive Consultants LLC 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 Digestive Consultants LLC was last updated on February 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.