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ADULT CARE SERVICES, INC.
NPI 1851343883
Internal Medicine in Saint Louis, MO

Active since May 17, 2006
4 CLAYTON COURT DR, SAINT LOUIS, MO 63131(314) 692-0092(314) 692-0095 Get Directions Write a Review

NPPES record last updated: February 7, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Adult Care Services, Inc. NPPES

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

ADULT CARE SERVICES, INC. (NPI 1851343883) is a healthcare organization registered as an internal medicine in Saint Louis, Missouri and active in the NPI registry since May 2006. The organization lists Zahirul Haque, President, as its authorized official.

NPPES Registry Identity

NPI1851343883
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameADULT CARE SERVICES, INC.
Location Address4 CLAYTON COURT DRSaint Louis, MO 63131-2524
Mailing Address4 Clayton Court DrSaint Louis, MO 63131-2524 · (314) 368-3422 · Fax (314) 692-0095
Phone(314) 692-0092
Fax(314) 692-0095
Organization SubpartNo
Authorized OfficialZahirul HaquePresident · (314) 368-3422
Enumeration DateMay 17, 2006
Last NPPES UpdateFebruary 7, 2025
NPPES CertifiedFebruary 7, 2025
✔ NPI 1851343883 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2001008540
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedClinic/Center · Primary CareTaxonomy 261QP2300X
4 CLAYTON COURT DR, Saint Louis, MO 63131
Open in Google Maps ↗

Other Identifiers 1

Medicaid500967302MO

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 Anthem Blue Cross and Blue Shield.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)

Adult Care Services, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Adult Care Services, Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Zahirul Haque, MD
Critical Care (Intensivists)
NPI 1578536546
4 CLAYTON COURT DR
Saint Louis, MO 63131
(314) 368-3422
✔ PECOS✔ Accepts MedicareSame address
Joan Mass, MD
Internal Medicine
NPI 1295708162
300 1ST CAPITOL DR
Saint Charles, MO 63301
(636) 947-5000
✔ PECOS11 mi
Mohammad Zaman, MD
Internal Medicine
NPI 1346350196
1000 BURR RIDGE PKWY STE 201
Burr Ridge, IL 60527
(312) 818-4650
✔ PECOS253 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 Adult Care Services, Inc.'s NPI number?

The NPI number for Adult Care Services, Inc. is 1851343883. It was assigned to this organization in the NPPES registry on May 17, 2006.

Where is Adult Care Services, Inc. located?

Adult Care Services, Inc. is located at 4 Clayton Court Dr, Saint Louis, MO 63131. The listed phone number is (314) 692-0092.

What is Adult Care Services, Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Adult Care Services, Inc. enrolled in Medicare?

Yes. Adult Care Services, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Adult Care Services, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Adult Care Services, Inc., in Critical Care (Intensivists) and Internal Medicine. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Adult Care Services, Inc. accept?

Health plans from Anthem Blue Cross and Blue Shield list Adult Care Services, 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 Adult Care Services, Inc. was last updated on February 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.