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MR. JACK JIENAN FANG M.D.
NPI 1083904080
Hospitalist in Rego Park, NY

Active since April 11, 2011PECOS EnrolledAccepts Medicare Assignment
91.41/100
CMS Quality Rating
6265 SAUNDERS ST APT 5G, REGO PARK, NY 11374(347) 205-7909 Get Directions Write a Review

NPPES record last updated: March 26, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Jack Jienan Fang M.d. NPPES

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

MR. JACK JIENAN FANG M.D. (NPI 1083904080) is an individual hospitalist provider in Rego Park, New York, licensed in Massachusetts (260808) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Northeast Hospital Corporation, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1083904080
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameMR. JACK JIENAN FANGCredential: M.D.
Location Address6265 SAUNDERS ST APT 5GRego Park, NY 11374-1576
Mailing Address4323 Colden St Apt 19mFlushing, NY 11355-5926 · (347) 205-7909
Phone(347) 205-7909
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateApril 11, 2011
Last NPPES UpdateMarch 26, 2018
✔ NPI 1083904080 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in MA · 260808
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 260808 (MA)
6265 SAUNDERS ST APT 5G, Rego Park, NY 11374
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, WellSense Health Plan.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

Mr. Jack Jienan Fang 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 ID6608098967
PECOS Enrollment IDI20141121000477
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

4

Medicare enrollment records show Jack Fang reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beth Israel Lahey Health Primary Care Inc
172 mi
Clinic/Center
8 COMMERCE BLVD
Middleboro, MA 02346
  • Reassigned Medicare billing, Massachusetts enrollment
  • 410 clinicians in this Medicare group
NPI 1568292423 (774) 373-8630
Lahey Clinic, Inc.
185 mi
Internal Medicine
41 MALL RD, LAHEY CLINIC
Burlington, MA 01805
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1063447316 (Massachusetts)
  • 1,574 clinicians in this Medicare group
NPI 1538194980 (781) 744-8000
Winchester Lahey Inpatient Specialists PLLC
186 mi
Internal Medicine
41 HIGHLAND AVE
Winchester, MA 01890
  • Reassigned Medicare billing, Massachusetts enrollment
  • 101 clinicians in this Medicare group
NPI 1144770629 (781) 729-9000
Lowell General Inpatient Specialists PLLC
186 mi
Internal Medicine
295 VARNUM AVE
Lowell, MA 01854
  • Reassigned Medicare billing, Massachusetts enrollment
  • 109 clinicians in this Medicare group
NPI 1649626391 (978) 937-6439

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.

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.
206 services203 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.
189 services119 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.
69 services68 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
41 services41 patients

Hospital Affiliations CMS Care Compare 4

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

Northeast Hospital Corporation

Acute Care Hospitals · Beverly, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220033
Location85 Herrick StreetBeverly, MA 01915 · Essex County
Emergency services Birthing friendly

Lowell General Hospital

Acute Care Hospitals · Lowell, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220063
Location295 Varnum AvenueLowell, MA 01854 · Middlesex County
Emergency services Birthing friendly

Winchester Hospital

Acute Care Hospitals · Winchester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220105
Location41 Highland AvenueWinchester, MA 01890 · Middlesex County
Emergency services Birthing friendly

Lahey Hospital & Medical Center, Burlington

Acute Care Hospitals · Burlington, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220171
Location41 & 45 Mall RoadBurlington, MA 01803 · Middlesex County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11374 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
$153.13 typical visit price
range $67.00 – $201.98
Typical copayment $38.28 (range $16.75 – $50.49)
Most-billed visit code 99204
Established Patient
$116.96 typical visit price
range $21.62 – $163.52
Typical copayment $29.24 (range $5.40 – $40.88)
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.

91.41/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality76.87
Promoting Interoperability100
Improvement Activities40

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 Jack Fang's NPI number?

The NPI number for Jack Fang is 1083904080. It was assigned to this individual provider in the NPPES registry on April 11, 2011.

Where is Jack Fang located?

Jack Fang practices at 6265 Saunders St Apt 5G, Rego Park, NY 11374. The listed phone number is (347) 205-7909.

What is Jack Fang's specialty?

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

Is Jack Fang enrolled in Medicare?

Yes. Jack Fang 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 Jack Fang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jack Fang reassigns Medicare benefits to 4 organizations: Beth Israel Lahey Health Primary Care Inc (Middleboro, MA), Lahey Clinic, Inc. (Burlington, MA), Winchester Lahey Inpatient Specialists PLLC (Winchester, MA) and Lowell General Inpatient Specialists PLLC (Lowell, MA). 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 Jack Fang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jack Fang accept?

Health plans from Anthem Blue Cross and Blue Shield and WellSense Health Plan list Jack Fang 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.

Is Jack Fang affiliated with any hospitals?

According to CMS data, Jack Fang is affiliated with Northeast Hospital Corporation, Lowell General Hospital, Winchester Hospital and Lahey Hospital & Medical Center, Burlington.

When was this NPI record last updated?

The NPPES record for Jack Fang was last updated on March 26, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.