1. Home
  2. Directory
  3. Connecticut
  4. Stamford
  5. Internal Medicine
  6. NPI Profile

AISHA SIDDIQI M.D.
NPI 1144563552
Internal Medicine in Stamford, CT

Active since April 03, 2013PECOS EnrolledAccepts Medicare Assignment
93.27/100
CMS Quality Rating
1 HOSPITAL PLZ, STAMFORD, CT 06902(203) 276-7298(203) 276-4842 Get Directions Write a Review

NPPES record last updated: November 7, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 7, 2024, Sep 2, 2016 (2 updates tracked since 2016).

About Aisha Siddiqi M.d. NPPES

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

AISHA SIDDIQI M.D. (NPI 1144563552) is an individual internal medicine provider in Stamford, Connecticut, licensed in Connecticut (55459) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1144563552
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameAISHA SIDDIQICredential: M.D.
Location Address1 HOSPITAL PLZStamford, CT 06902-3602
Mailing Address1 Hospital PlzStamford, CT 06902-3602 · (203) 276-7298 · Fax (203) 276-4842
Phone(203) 276-7298
Fax(203) 276-4842
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateApril 3, 2013
Last NPPES UpdateNovember 7, 20242 updates tracked since enumeration
NPPES CertifiedNovember 7, 2024
✔ NPI 1144563552 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 · 55459
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.
1 HOSPITAL PLZ, Stamford, CT 06902
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Aisha Siddiqi M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032405287
PECOS Enrollment IDI20160914001558
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 Aisha Siddiqi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Stamford Health Medical Group Inc
2.2 mi
General Practice
ONE OMEGA DRIVE, BUILDING 3, 2ND FLOOR
Stamford, CT 06907
  • Reassigned Medicare billing, Connecticut enrollment
  • 496 clinicians in this Medicare group
NPI 1154633980 (203) 276-7447
Mill Hill Medical Consultants Inc
4.8 mi
Surgical Oncology
77 LAFAYETTE PL, SUITE 302
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • Medicare enrollment name: Northeast Medical Group Inc
  • 1,824 clinicians in this Medicare group
NPI 1245249549 (203) 863-4250

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
126 services43 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
118 services51 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
38 services21 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
37 services36 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06902 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.27/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality81.72
Promoting Interoperability78.03
Improvement Activities40

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.

MR. MATHIAS AIHIOKHAI PA-C
Physician Assistant
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-1000
KRISTA ANN ULRICH PHYSICIAN ASSISTANT
Physician Assistant (Surgical)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7022
JEFFREY HAMRLICEK PA-C
Physician Assistant (Surgical)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7022
DR. SCOTT A. COLE M.D.
Obstetrics & Gynecology
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-2030
JOAN MORTAROTTI FNP-C
Nurse Practitioner (Family)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-2695
DR. ANDREAS BUB MD
Hospitalist
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7147
FAHMIDA BEGUM PA
Physician Assistant
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7298
MARYANA GERMAN APRN
Nurse Practitioner (Family)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 348-7410

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 Aisha Siddiqi's NPI number?

The NPI number for Aisha Siddiqi is 1144563552. It was assigned to this individual provider in the NPPES registry on April 3, 2013.

Where is Aisha Siddiqi located?

Aisha Siddiqi practices at 1 Hospital Plz, Stamford, CT 06902. The listed phone number is (203) 276-7298.

What is Aisha Siddiqi's specialty?

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

Is Aisha Siddiqi enrolled in Medicare?

Yes. Aisha Siddiqi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Aisha Siddiqi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aisha Siddiqi reassigns Medicare benefits to 2 organizations: Stamford Health Medical Group Inc (Stamford, CT) and Mill Hill Medical Consultants 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 Aisha Siddiqi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Aisha Siddiqi was last updated on November 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.