ALKA AGGARWAL MD
NPI 1427041987
Internal Medicine in Danbury, CT

Q: What is Alka Aggarwal's NPI number?

The NPI number for Alka Aggarwal is 1427041987. It was assigned to this individual provider in the NPPES registry on August 30, 2005.

Q: What is Alka Aggarwal's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Alka Aggarwal was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since August 30, 2005PECOS EnrolledAccepts Medicare Assignment

24 HOSPITAL AVE, DANBURY, CT 06810(203) 739-6959 Get Directions Write a Review

NPPES record last updated: May 18, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Alka Aggarwal Md NPPES

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

ALKA AGGARWAL MD (NPI 1427041987) is an individual internal medicine provider in Danbury, Connecticut, licensed in Connecticut (51881) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS, is affiliated with Morristown Medical Center, and is a graduate of Other (1997).

NPPES Registry Identity

NPI1427041987

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameALKA AGGARWALCredential: MD

Location Address24 HOSPITAL AVEDanbury, CT 06810-6099

Mailing Address694 Springfield AveSummit, NJ 07901-2321 · (908) 356-0741 · Fax (800) 878-1471

Phone(203) 739-6959

Sole ProprietorNo

Medical School CMSOtherGraduated 1997

Enumeration DateAugust 30, 2005

Last NPPES UpdateMay 18, 2026

NPPES CertifiedMay 18, 2026

✔ NPI 1427041987 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 · 51881

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.

24 HOSPITAL AVE, Danbury, CT 06810

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Other Identifiers 10

Other10110710-U104Cdphp

Other4830R1Empire Bc-bs

OtherP3506906Oxford Health Plan

Other050923000060Fidelis Care Of Ny

Other2590214Ghi Ppo

Other7297560Aetna-ppo

Other000000087400Ghi-hmo

Other388165Mvp Healthplan

Other3C5202Healthnet-group Id

Other3760523Aetna Hmo

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Alka Aggarwal Md 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 ID9032177522

PECOS Enrollment IDI20041230000231, I20180921000143

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

Medicare enrollment records show Alka Aggarwal reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Phelps Memorial Hospital Association

32 mi

General Acute Care Hospital

701 N BROADWAY
Sleepy Hollow, NY 10591

Reassigned Medicare billing, New York enrollment
65 clinicians in this Medicare group

NPI 1720185267 (914) 366-3000

Cogent Medical Care PC

49 mi

Internal Medicine

101 HOSPITAL RD
East Patchogue, NY 11772

Reassigned Medicare billing, New York enrollment
640 clinicians in this Medicare group

NPI 1912941238 (631) 687-4131

Practice Associates Medical Group

71 mi

Internal Medicine

100 MADISON AVENUE, INTEROFFICE #68
Morristown, NJ 07960

Reassigned Medicare billing, New Jersey enrollment
1,699 clinicians in this Medicare group

NPI 1427016385 (844) 264-2250

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 7

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

1,044 services997 patients

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.

217 services197 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

187 services186 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.

72 services62 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.

34 services34 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

33 services33 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Morristown Medical Center

Acute Care Hospitals · Morristown, NJ

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310015

Location100 Madison AveMorristown, NJ 07960 · Morris County

Emergency services Birthing friendly

Nyack Hospital

Acute Care Hospitals · Nyack, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number330104

Location160 North Midland AvenueNyack, NY 10960 · Rockland County

Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06810 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier13 claims13 services$12.76 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier24 claims24 services$59.38 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. ANDREW CALIGIURI D.O.

Emergency Medicine