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DR. REX ROBERT HERMANSEN M.D.
NPI 1639532039
Hospitalist in New York, NY

Active since April 01, 2016PECOS EnrolledAccepts Medicare Assignment
1 GUSTAVE L LEVY PL, NEW YORK, NY 10029(212) 241-1653(212) 289-6393 Get Directions Write a Review

NPPES record last updated: March 21, 2019. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Mar 21, 2019, Apr 1, 2016 (2 updates tracked since 2016).

About Dr. Rex Robert Hermansen M.d. NPPES

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

DR. REX ROBERT HERMANSEN M.D. (NPI 1639532039) is an individual hospitalist provider in New York, New York, licensed in New York (296964) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1639532039
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. REX ROBERT HERMANSENCredential: M.D.
Location Address1 GUSTAVE L LEVY PLNew York, NY 10029
Mailing Address1 Gustave L Levy Pl # 3000New York, NY 10029-6504 · (212) 987-3100
Phone(212) 241-1653
Fax(212) 289-6393
Sole ProprietorYes
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2016
Enumeration DateApril 1, 2016
Last NPPES UpdateMarch 21, 20192 updates tracked since enumeration
✔ NPI 1639532039 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in NY · 296964
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.

1 GUSTAVE L LEVY PL, New York, NY 10029
Open in Google Maps ↗

Secondary Practice Location 1

Location 1622 W 168th StNew York, NY 10032-3720 · Phone (212) 305-6262

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Rex Robert Hermansen 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 ID9638412703
PECOS Enrollment IDI20190514001380
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.

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.

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.
371 services128 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.
279 services106 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.
68 services66 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.
56 services55 patients

Hospital Affiliations CMS Care Compare

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

Mount Sinai Hospital

Acute Care Hospitals · New York, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330024
LocationOne Gustave L Levy PlaceNew York, NY 10029 · New York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10029 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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 6

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
1 supplier14 claims14 services$43.85 avg. paid by Medicare
Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier17 claims19 services$914.72 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers20 claims20 services$61.06 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
2 suppliers14 claims14 services$33.10 avg. paid by Medicare
Lightweight wheelchair K0003
DME-Wheelchairs · category DD000N
1 supplier13 claims13 services$18.61 avg. paid by Medicare
Elevating leg rests, pair (for use with capped rental wheelchair base) K0195
DME-Wheelchairs · category DD021N
1 supplier13 claims13 services$5.51 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.

MR. CARL ANTHONY KIRTON NP
Nurse Practitioner (Adult Health)
1 GUSTAVE L LEVY PL
NEW YORK, NY 10029
New York County (212) 241-3921
TAMARA LOUISE KALIR MD, PHD
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY
NEW YORK, NY 10029
New York County (212) 241-3784
DR. LIANE DELIGDISCH MD
Pathology (Anatomic Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, ANNENBERG 15-92
NEW YORK, NY 10029
New York County (212) 241-9114
GEORGE MICHAEL KLEINMAN MD
Pathology (Neuropathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
New York County (212) 731-7772
PATRICK ALEXANDER LENTO MD
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, BOX 1194
NEW YORK, NY 10029
New York County (212) 731-7771
SHABNAM M. JAFFER MD
Pathology (Anatomic Pathology & Clinical Pathology)
1 GUSTAVE L LEVY PL
NEW YORK, NY 10029
New York County (212) 241-1951
ROBERT GEORGE PHELPS MD
Pathology (Dermatopathology)
1 GUSTAVE L LEVY PL, 3-08 ANNENBERG BUILDING
NEW YORK, NY 10029
New York County (212) 241-6064
MARGRET MAGID MD
Pathology (Pediatric Pathology)
1 GUSTAVE L LEVY PL, PATHOLOGY, ANNENBERG 15-92
NEW YORK, NY 10029
New York County (212) 241-7459

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 Rex Hermansen's NPI number?

The NPI number for Rex Hermansen is 1639532039. It was assigned to this individual provider in the NPPES registry on April 1, 2016.

Where is Rex Hermansen located?

Rex Hermansen practices at 1 Gustave L Levy Pl, New York, NY 10029. The listed phone number is (212) 241-1653.

What is Rex Hermansen's specialty?

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

Is Rex Hermansen enrolled in Medicare?

Yes. Rex Hermansen 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.

Is Rex Hermansen affiliated with any hospitals?

According to CMS data, Rex Hermansen is affiliated with Mount Sinai Hospital.

When was this NPI record last updated?

The NPPES record for Rex Hermansen was last updated on March 21, 2019. NPI Profile syncs with the weekly NPPES data releases published by CMS.