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MUMTAZ AHMAD NIAZI MD
NPI 1528087509
Internal Medicine - Hepatology in Newark, NJ

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
73.27/100
CMS Quality Rating
140 BERGEN ST # D-1650, NEWARK, NJ 07103(973) 972-9000(973) 972-8325 Get Directions Write a Review

NPPES record last updated: February 22, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 22, 2022, Mar 11, 2019, Dec 19, 2017 and 1 more (4 updates tracked since 2017).

About Mumtaz Ahmad Niazi Md NPPES

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

MUMTAZ AHMAD NIAZI MD (NPI 1528087509) is an individual hepatology provider in Newark, New Jersey, licensed in New Jersey (25MA07924400) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with The University Hospital, and maintains a secondary practice location in Newark.

NPPES Registry Identity

NPI1528087509
Entity TypeIndividualMale
Primary Taxonomy207RI0008X
Provider Legal NameMUMTAZ AHMAD NIAZICredential: MD
Location Address140 BERGEN ST # D-1650Newark, NJ 07103
Mailing Address30 Bergen St Rm 1205Newark, NJ 07107-3000
Phone(973) 972-9000
Fax(973) 972-8325
Sole ProprietorNo
Medical School CMSOtherGraduated 1997
Enumeration DateJuly 19, 2006
Last NPPES UpdateFebruary 22, 20224 updates tracked since enumeration
NPPES CertifiedFebruary 22, 2022
✔ NPI 1528087509 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · HepatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RI0008X
License✔ Licensed in NJ · 25MA07924400
Definition
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 25MA07924400 (NJ)
140 BERGEN ST # D-1650, Newark, NJ 07103
Open in Google Maps ↗

Secondary Practice Location 1

Location 1185 S Orange Ave # Msbh-254Newark, NJ 07103 · Phone (973) 972-5252 · Fax (973) 972-3144

Other Identifiers 2

Medicaid60063701SD
Other232664784PA · Taxid

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

Mumtaz Ahmad Niazi 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 ID6002918745
PECOS Enrollment IDI20090508000552
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 Mumtaz Niazi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Physician Associates Of New Jersey Inc
Same address
Internal Medicine
140 BERGEN ST
Newark, NJ 07103
  • Reassigned Medicare billing, New Jersey enrollment
  • 173 clinicians in this Medicare group
NPI 1760492367 (973) 972-9000
Barnabas Health Medical Group, PC
5.9 mi
Specialist
95 OLD SHORT HILLS RD
West Orange, NJ 07052
  • Reassigned Medicare billing, New Jersey enrollment
  • 757 clinicians in this Medicare group
NPI 1447206420 (888) 724-7123

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 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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
148 services109 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.
141 services46 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.
89 services16 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.
48 services39 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.
25 services17 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services12 patients

Hospital Affiliations CMS Care Compare

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

The University Hospital

Acute Care Hospitals · Newark, NJ
1/5 CMS rating
OwnershipGovernment - State
CMS Certification Number310119
Location150 Bergen StNewark, NJ 07103 · Essex County
Emergency services Birthing friendly

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.

73.27/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality44.89
Promoting Interoperability83
Improvement Activities40
Cost47.69

Referred Medical Equipment & Supplies CMS DME claims 6

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

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
12 suppliers168 claims11,355 services$0.30 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
8 suppliers62 claims7,980 services$0.17 avg. paid by Medicare
Mycophenolic acid, oral, 180 mg J7518
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers71 claims12,660 services$0.94 avg. paid by Medicare
Everolimus, oral, 0.25 mg J7527
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers15 claims4,920 services$4.06 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
16 suppliers183 claims183 services$17.68 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
9 suppliers140 claims141 services$12.02 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Mumtaz Niazi's NPI number?

The NPI number for Mumtaz Niazi is 1528087509. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is Mumtaz Niazi located?

Mumtaz Niazi practices at 140 Bergen St # D-1650, Newark, NJ 07103. The listed phone number is (973) 972-9000.

What is Mumtaz Niazi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hepatology, with taxonomy code 207RI0008X.

Is Mumtaz Niazi enrolled in Medicare?

Yes. Mumtaz Niazi 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 Mumtaz Niazi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mumtaz Niazi reassigns Medicare benefits to 2 organizations: University Physician Associates Of New Jersey Inc (Newark, NJ) and Barnabas Health Medical Group, PC (West Orange, NJ). 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 Mumtaz Niazi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mumtaz Niazi accept?

Health plans from Oscar Health list Mumtaz Niazi 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 Mumtaz Niazi affiliated with any hospitals?

According to CMS data, Mumtaz Niazi is affiliated with The University Hospital.

When was this NPI record last updated?

The NPPES record for Mumtaz Niazi was last updated on February 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.