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HARSHDEEP SINGH NAT M.D.
NPI 1295984672
Hospitalist in New Haven, CT

Active since September 10, 2008PECOS EnrolledAccepts Medicare Assignment
93.27/100
CMS Quality Rating
20 YORK STREET, CB-2041, NEW HAVEN, CT 06510(203) 688-4748(203) 688-4740 Get Directions Write a Review

NPPES record last updated: February 4, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Harshdeep Singh Nat M.d. NPPES

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

HARSHDEEP SINGH NAT M.D. (NPI 1295984672) is an individual hospitalist provider in New Haven, Connecticut, licensed in Connecticut (49485) and active in the NPI registry since September 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1295984672
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameHARSHDEEP SINGH NATCredential: M.D.
Location Address20 YORK STREET, CB-2041New Haven, CT 06510
Mailing Address20 York Street, Cb-2041New Haven, CT 06510 · (203) 688-4748 · Fax (203) 688-4740
Phone(203) 688-4748
Fax(203) 688-4740
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateSeptember 10, 2008
Last NPPES UpdateFebruary 4, 2015
✔ NPI 1295984672 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CT · 49485
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License 49485 (CT)
20 YORK STREET, New Haven, CT 06510
Open in Google Maps ↗

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 and accepts Medicare assignment

Harshdeep Singh Nat 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 ID3678751252
PECOS Enrollment IDI20110630000054
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 Reassignment

Medicare enrollment records show Harshdeep Nat reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mill Hill Medical Consultants Inc
Same address
Hospitalist
20 YORK ST, CB 2041
New Haven, CT 06510
  • Reassigned Medicare billing, Connecticut enrollment
  • Medicare enrollment name: Northeast Medical Group Inc
  • 1,824 clinicians in this Medicare group
NPI 1952624769 (203) 688-4741

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 2

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 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.
28 services28 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.
28 services28 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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.

SARAH HILL LCSW
Social Worker (Clinical)
20 YORK STREET, YALE-NEW HAVEN PSYCHIATRIC HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9907
JENNIFER PALERMO MD
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YNHH TOMPKINS 226
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9503
TASHA LEE CUVI APRN
Nurse Practitioner (Gerontology)
20 YORK STREET, YALE-NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4748
NIKHIL SEVAL M.D.
Internal Medicine
20 YORK STREET, YNHH - IM INFECTIOUS DISEASES
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
JESSICA LAUREN DOLMAN MD
Hospitalist
20 YORK STREET, YNHH DEPT OF INTERNAL MEDICINE
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
EESHA VIJAYKUMAR NATARAJAN MBBS
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YNHH TOMPKINS 226
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9503
NIRANJANA RAMANI MBBS
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YALE NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
MRS. SHARON MOALES LCSW
Social Worker (Clinical)
20 YORK STREET, YALE NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-5193

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 Harshdeep Nat's NPI number?

The NPI number for Harshdeep Nat is 1295984672. It was assigned to this individual provider in the NPPES registry on September 10, 2008.

Where is Harshdeep Nat located?

Harshdeep Nat practices at 20 York Street Cb-2041, New Haven, CT 06510. The listed phone number is (203) 688-4748.

What is Harshdeep Nat's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Harshdeep Nat enrolled in Medicare?

Yes. Harshdeep Nat 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 organization bills Medicare for Harshdeep Nat's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harshdeep Nat reassigns Medicare benefits to Mill Hill Medical Consultants Inc (New Haven, CT). The 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 Harshdeep Nat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Harshdeep Nat accept?

Health plans from Anthem Blue Cross and Blue Shield list Harshdeep Nat 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 Harshdeep Nat was last updated on February 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.