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CHARLES B SEELIG M.D.
NPI 1215958129
Internal Medicine in Greenwich, CT

Active since July 23, 2006PECOS Enrolled
5 PERRYRIDGE RD, MEDICAL EDUCATION, GREENWICH, CT 06830(203) 863-3913(203) 863-3924 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Charles B Seelig M.d. NPPES

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

CHARLES B SEELIG M.D. (NPI 1215958129) is an individual internal medicine provider in Greenwich, Connecticut, licensed in Connecticut (034300) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215958129
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameCHARLES B SEELIGCredential: M.D.
Location Address5 PERRYRIDGE RD, MEDICAL EDUCATIONGreenwich, CT 06830-4608
Mailing Address5 Perryridge Rd, Medical EducationGreenwich, CT 06830-4608 · (203) 863-3913 · Fax (203) 863-3924
Phone(203) 863-3913
Fax(203) 863-3924
Sole ProprietorNo
Enumeration DateJuly 23, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1215958129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 034300
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.
5 PERRYRIDGE RD, Greenwich, CT 06830
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Other Identifiers 1

Medicare UPIND17277

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, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Charles B Seelig M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Charles Seelig reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Greenwich Hospital
0.3 mi
General Acute Care Hospital
5 PERRYRIDGE RD
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 268 clinicians in this Medicare group
NPI 1609846088 (203) 863-3000
Family Centers Inc
0.9 mi
Mental Health (Including Community Mental Health Center)
20 BRIDGE ST
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 30 clinicians in this Medicare group
NPI 1265477780 (203) 629-2822

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06830 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ZARA NADIA ILAHI MD
Pediatrics (Neonatal-Perinatal Medicine)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
MR. PAUL GREGORY LOFTUS MS
Physical Medicine & Rehabilitation
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3203
SARAH STAMPER M.D.
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD, MEDICAL EDUCATION
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3409
JUNE EVELYN JEON MD
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ARIANA DOMINICUS PA-C
Physician Assistant
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ERIC LI-MING HUANG BSC, PHARMD
Pharmacist (Pharmacotherapy)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3199
ROSEMARY PERLEY-KWAUK CRNA
Nurse Anesthetist, Certified Registered
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330
DR. FRANCISCO J BREA MD
Anesthesiology
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330

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 Charles Seelig's NPI number?

The NPI number for Charles Seelig is 1215958129. It was assigned to this individual provider in the NPPES registry on July 23, 2006.

Where is Charles Seelig located?

Charles Seelig practices at 5 Perryridge Rd Medical Education, Greenwich, CT 06830. The listed phone number is (203) 863-3913.

What is Charles Seelig's specialty?

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

Is Charles Seelig enrolled in Medicare?

Yes. Charles Seelig is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Charles Seelig's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Seelig reassigns Medicare benefits to 2 organizations: Greenwich Hospital (Greenwich, CT) and Family Centers Inc (Greenwich, CT). Each 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 Charles Seelig's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Charles Seelig accept?

Health plans from Anthem Blue Cross and Blue Shield list Charles Seelig 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 Charles Seelig was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.