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MIDSTATE NEPHROLOGY ASSOCIATES PC
NPI 1689877995
Internal Medicine - Nephrology in Middletown, CT

Active since June 06, 2007
535 SAYBROOK RD STE 5, MIDDLETOWN, CT 06457(860) 344-8606(860) 344-8963 Get Directions Write a Review

NPPES record last updated: January 5, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 5, 2024, Dec 11, 2023, Mar 17, 2023 and 2 more (5 updates tracked since 2018).

About Midstate Nephrology Associates Pc NPPES

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

MIDSTATE NEPHROLOGY ASSOCIATES PC (NPI 1689877995) is a healthcare organization registered as a nephrology in Middletown, Connecticut and active in the NPI registry since June 2007. The organization lists Sofia Guzman, Manager, as its authorized official.

NPPES Registry Identity

NPI1689877995
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameMIDSTATE NEPHROLOGY ASSOCIATES PC
Location Address535 SAYBROOK RD STE 5Middletown, CT 06457-4743
Mailing Address535 Saybrook Rd Ste 5Middletown, CT 06457-4743 · (860) 344-8606 · Fax (860) 344-8963
Phone(860) 344-8606
Fax(860) 344-8963
Organization SubpartNo
Authorized OfficialSofia GuzmanManager · (860) 344-8606
Enumeration DateJune 6, 2007
Last NPPES UpdateJanuary 5, 20245 updates tracked since enumeration
NPPES CertifiedJanuary 5, 2024
✔ NPI 1689877995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
535 SAYBROOK RD STE 5, Middletown, CT 06457
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Other Names 1

Former Legal Business NameMidstate Nephrology Associates Pc

Other Identifiers 1

Medicaid4064721CT

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Midstate Nephrology Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Midstate Nephrology Associates PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

David Miner, MD
Internal Medicine
NPI 1225125933
535 SAYBROOK RD STE 5
Middletown, CT 06457
(860) 344-8606
✔ PECOS✔ Accepts MedicareSame address
Thejas Swamy, MD
Nephrology
NPI 1790914547
535 SAYBROOK RD STE 5
Middletown, CT 06457
(860) 344-8606
✔ PECOS✔ Accepts MedicareSame address

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 Midstate Nephrology Associates PC's NPI number?

The NPI number for Midstate Nephrology Associates PC is 1689877995. It was assigned to this organization in the NPPES registry on June 6, 2007.

Where is Midstate Nephrology Associates PC located?

Midstate Nephrology Associates PC is located at 535 Saybrook Rd Ste 5, Middletown, CT 06457. The listed phone number is (860) 344-8606.

What is Midstate Nephrology Associates PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Midstate Nephrology Associates PC enrolled in Medicare?

Yes. Midstate Nephrology Associates PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Midstate Nephrology Associates PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Midstate Nephrology Associates PC, in Internal Medicine and Nephrology. 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, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Midstate Nephrology Associates PC was last updated on January 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.