NADIA KHAN SIRDAR M.D.
NPI 1528333671
Internal Medicine in Washington, DC

Q: What is Nadia Sirdar's NPI number?

The NPI number for Nadia Sirdar is 1528333671. It was assigned to this individual provider in the NPPES registry on March 21, 2012.

Q: What is Nadia Sirdar's specialty?

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

Q: Is Nadia Sirdar enrolled in Medicare?

No. Nadia Sirdar has opted out of Medicare through November 3, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Nadia Sirdar was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 March 21, 2012Opted out of Medicare · through Nov 3, 2027

5255 LOUGHBORO RD NW, WASHINGTON, DC 20016(202) 537-4342(202) 537-4734 Get Directions Write a Review

NPPES record last updated: April 18, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Nadia Khan Sirdar M.d. NPPES

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

NADIA KHAN SIRDAR M.D. (NPI 1528333671) is an individual internal medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (MD044478) and active in the NPI registry since March 2012. She has opted out of Medicare through November 3, 2027 and remains eligible to order and refer, maintains a secondary practice location in Park Ridge, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2012).

NPPES Registry Identity

NPI1528333671

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameNADIA KHAN SIRDARCredential: M.D.

Location Address5255 LOUGHBORO RD NWWashington, DC 20016-2633

Mailing Address5255 Loughboro Rd NwWashington, DC 20016-2633 · (202) 537-4342 · Fax (202) 537-4734

Phone(202) 537-4342

Fax(202) 537-4734

Sole ProprietorNo

Medical School CMSUniversity Of Texas Southwestern Medical School At DallasGraduated 2012

Enumeration DateMarch 21, 2012

Last NPPES UpdateApril 18, 2025

NPPES CertifiedApril 18, 2025

✔ NPI 1528333671 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 DC · MD044478

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 ListedHospitalistTaxonomy 208M00000X · License MD044478 (DC)

5255 LOUGHBORO RD NW, Washington, DC 20016

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Secondary Practice Location 1

Location 11775 Ballard RdPark Ridge, IL 60068-1005 · Phone (847) 318-9340

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Nadia Khan Sirdar M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 3, 2025 through November 3, 2027.

Opt-Out Effective DateNovember 3, 2025

Opt-Out In Effect ThroughNovember 3, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Areas of Expertise CMS Part B claims 6

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.

326 services163 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.

126 services122 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.

63 services54 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.

45 services30 patients

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.

39 services39 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

17 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20016 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

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.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

2 suppliers26 claims26 services$30.63 avg. paid by Medicare

Lightweight wheelchair K0003

DME-Wheelchairs · category DD000N

1 supplier16 claims16 services$16.33 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.

DANIEL RICHARD STAIRIKER CRNP

Nurse Practitioner