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DIABETES & ENDOCRINOLOGY SPECIALISTS, INC.
NPI 1861404675
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chesterfield, MO

Active since August 12, 2006CLIA 26D0436990 · Accreditation
222 S WOODS MILL RD, SUITE 410 NORTH, CHESTERFIELD, MO 63017(314) 469-6224(314) 469-0744 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Diabetes & Endocrinology Specialists, Inc. NPPES

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

DIABETES & ENDOCRINOLOGY SPECIALISTS, INC. (NPI 1861404675) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Chesterfield, Missouri and active in the NPI registry since August 2006. The organization holds an CLIA Accreditation certificate valid through December 22, 2027 and lists Norman Fishman, President, as its authorized official.

NPPES Registry Identity

NPI1861404675
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameDIABETES & ENDOCRINOLOGY SPECIALISTS, INC.
Location Address222 S WOODS MILL RD, SUITE 410 NORTHChesterfield, MO 63017-3625
Mailing Address225 Bellington LnSaint Louis, MO 63141-8118 · (314) 469-6224 · Fax (314) 469-0744
Phone(314) 469-6224
Fax(314) 469-0744
Organization SubpartNo
Authorized OfficialNorman FishmanPresident · (314) 469-6224
Enumeration DateAugust 12, 2006
Last NPPES UpdateAugust 22, 2020
✔ NPI 1861404675 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MO · R6249
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
222 S WOODS MILL RD, Chesterfield, MO 63017
Open in Google Maps ↗

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)

Diabetes & Endocrinology Specialists, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Diabetes & Endocrinology Specialists, Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 6 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Natalie Bueltmann, NP-C
Nurse Practitioner
NPI 1043747504
222 S WOODS MILL RD STE 410N
Chesterfield, MO 63017
(314) 469-6224
✔ PECOS✔ Accepts MedicareSame address
Rachel Fishman Oiknine, M.D.
Endocrinology
NPI 1003840349
222 S WOODS MILL RD SUITE 410N
Chesterfield, MO 63017
(314) 469-6224
✔ PECOS✔ Accepts Medicare0.6 mi
Ralph Oiknine, M.D.
Endocrinology
NPI 1255365581
222 S WOODS MILL RD
Chesterfield, MO 63017
(314) 469-6224
✔ PECOS✔ Accepts Medicare0.6 mi
Maria Weir
Nurse Practitioner
NPI 1033485917
222 S WOODS MILL RD SUITE 410N
Chesterfield, MO 63017
(314) 469-6224
✔ PECOS✔ Accepts Medicare0.6 mi
Norman Fishman, M.D.
Endocrinology
NPI 1528086659
222 S WOODS MILL RD SUITE 410N
Chesterfield, MO 63017
(314) 469-6224
✔ PECOS✔ Accepts Medicare0.6 mi
Ruth Thurau, NP
Nurse Practitioner
NPI 1730132143
224 S WOODS MILL RD STE. 670 SOUTH
Chesterfield, MO 63017
(314) 469-2182
✔ PECOS0.7 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 26D0436990

Diabetes And Endocrinology Specialists · Chesterfield, MO
Active · expires Dec 22, 2027
CLIA Number26D0436990
Laboratory TypePhysician Office
Certificate Effective DateDecember 23, 2025
Certificate Expiration DateDecember 22, 2027
Laboratory DirectorNorman Fishman
Laboratory Phone(314) 469-6224
Laboratory LocationDiabetes And Endocrinology Specialists222 S Woods Mill Rd Ste 410 N, Chesterfield, MO 63017
CLIA data matches this NPI record on: Address Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 Diabetes & Endocrinology Specialists, Inc.'s NPI number?

The NPI number for Diabetes & Endocrinology Specialists, Inc. is 1861404675. It was assigned to this organization in the NPPES registry on August 12, 2006.

Where is Diabetes & Endocrinology Specialists, Inc. located?

Diabetes & Endocrinology Specialists, Inc. is located at 222 S Woods Mill Rd Suite 410 North, Chesterfield, MO 63017. The listed phone number is (314) 469-6224.

What is Diabetes & Endocrinology Specialists, Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Diabetes & Endocrinology Specialists, Inc. enrolled in Medicare?

Yes. Diabetes & Endocrinology Specialists, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Diabetes & Endocrinology Specialists, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Diabetes & Endocrinology Specialists, Inc.. 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 Endocrinology (3) and Nurse Practitioner (3). Of these, 1 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Diabetes & Endocrinology Specialists, Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 26D0436990) is associated with this NPI, valid through December 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Diabetes & Endocrinology Specialists, Inc. 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 Diabetes & Endocrinology Specialists, Inc. 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 Diabetes & Endocrinology Specialists, Inc. was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.