1. Home
  2. Directory
  3. New York
  4. Bronx
  5. Internal Medicine
  6. NPI Profile

DR. MARK A BRUBAKER M.D.
NPI 1275778557
Internal Medicine in Bronx, NY

Active since December 15, 2008PECOS EnrolledAccepts Medicare Assignment
94.95/100
CMS Quality Rating
3444 KOSSUTH AVE, 4TH FLOOR, BRONX, NY 10467(718) 920-2273(718) 653-5324 Get Directions Write a Review

NPPES record last updated: July 24, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Mark A Brubaker M.d. NPPES

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

DR. MARK A BRUBAKER M.D. (NPI 1275778557) is an individual internal medicine provider in Bronx, New York, licensed in New York (260891) and active in the NPI registry since December 2008. He is enrolled in Medicare PECOS, is affiliated with Hackensack University Medical Center, and is a graduate of New York Medical College (2008).

NPPES Registry Identity

NPI1275778557
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK A BRUBAKERCredential: M.D.
Location Address3444 KOSSUTH AVE, 4TH FLOORBronx, NY 10467-2410
Mailing Address3444 Kossuth Ave, 4th FloorBronx, NY 10467-2410 · (718) 920-2273 · Fax (718) 653-5324
Phone(718) 920-2273
Fax(718) 653-5324
Sole ProprietorYes
Medical School CMSNew York Medical CollegeGraduated 2008
Enumeration DateDecember 15, 2008
Last NPPES UpdateJuly 24, 2014
✔ NPI 1275778557 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 260891
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.
3444 KOSSUTH AVE, Bronx, NY 10467
Open in Google Maps ↗

Other Identifiers 1

Medicaid03363646NY

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

Dr. Mark A Brubaker 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 ID8325282346
PECOS Enrollment IDI20160425000302
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 Mark Brubaker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hackensack Meridian Health Medical Group - Primary Care PC
39 mi
Family Medicine
331 NEWMAN SPRINGS RD STE 220
Red Bank, NJ 07701
  • Reassigned Medicare billing, New Jersey enrollment
  • 689 clinicians in this Medicare group
NPI 1336203538 (732) 807-0800
Hackensack Meridian Health Medical Group - Specialty Care PC
39 mi
Surgical Critical Care
331 NEWMAN SPRINGS RD STE 220
Red Bank, NJ 07701
  • Reassigned Medicare billing, New Jersey enrollment
  • 2,844 clinicians in this Medicare group
NPI 1215989249 (732) 807-0800

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.
177 services176 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.
142 services142 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.
75 services75 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.
59 services56 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.
58 services57 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.
19 services19 patients

Hospital Affiliations CMS Care Compare

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

Hackensack University Medical Center

Acute Care Hospitals · Hackensack, NJ
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310001
Location30 Prospect AveHackensack, NJ 07601 · Bergen County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10467 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

94.95/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.26
Promoting Interoperability100
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.

DR. ANJALI SHARMA M.D.
Internal Medicine (Infectious Disease)
3444 KOSSUTH AVE, 3RD FLOOR
BRONX, NY 10467
Bronx County (718) 920-8542
MATTHEW A BERGER MD
Internal Medicine
3444 KOSSUTH AVE, 5TH FLOOR
BRONX, NY 10467
Bronx County (718) 920-2273
URIEL R FELSEN MD
Student in an Organized Health Care Education/Training Program
3444 KOSSUTH AVE, 3RD FLOOR
BRONX, NY 10467
Bronx County (718) 920-8542
DR. RACHEL SHARON GROSS M.D., M.S.
Pediatrics
3444 KOSSUTH AVE, FAMILY CARE CENTER, PEDIATRIC PRACTICE C
BRONX, NY 10467
Bronx County (718) 920-2655
MRS. LAURA GRABISCH RD
Dietitian, Registered
3444 KOSSUTH AVE, SCHIFF PAVILLION 2ND FLOOR ROOM 6
BRONX, NY 10467
Bronx County (718) 920-7331
JAMIE LAUREN OSMAN-WAGER M.D.
Internal Medicine
3444 KOSSUTH AVE, FAMILY CARE CENTER, 5TH FLOOR, PAA
BRONX, NY 10467
Bronx County (718) 920-2273
MS. ANA ROSA ONI ESELEH LCSW
Social Worker (Clinical)
3444 KOSSUTH AVE
BRONX, NY 10467
Bronx County (718) 920-5976
DR. JILLIAN BANDLER PAREKH M.D.
Pediatrics
3444 KOSSUTH AVE
BRONX, NY 10467
Bronx County (718) 920-2273

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 Mark Brubaker's NPI number?

The NPI number for Mark Brubaker is 1275778557. It was assigned to this individual provider in the NPPES registry on December 15, 2008.

Where is Mark Brubaker located?

Mark Brubaker practices at 3444 Kossuth Ave 4th Floor, Bronx, NY 10467. The listed phone number is (718) 920-2273.

What is Mark Brubaker's specialty?

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

Is Mark Brubaker enrolled in Medicare?

Yes. Mark Brubaker 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 Mark Brubaker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Brubaker reassigns Medicare benefits to 2 organizations: Hackensack Meridian Health Medical Group - Primary Care PC (Red Bank, NJ) and Hackensack Meridian Health Medical Group - Specialty Care PC (Red Bank, 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 Mark Brubaker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mark Brubaker affiliated with any hospitals?

According to CMS data, Mark Brubaker is affiliated with Hackensack University Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Brubaker was last updated on July 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.