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DR. FREDERICK LORENZ THUM III M.D.
NPI 1063438521
Emergency Medicine in New York, NY

Active since July 15, 2006PECOS EnrolledAccepts Medicare Assignment
1 GUSTAVE L LEVY PL # 1149, MOUNT SINAI MEDICAL CTR, DEPT OF EMERGENCY MEDICINE, NEW YORK, NY 10029(212) 241-6639 Get Directions Write a Review

NPPES record last updated: August 24, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Frederick Lorenz Thum Iii M.d. NPPES

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

DR. FREDERICK LORENZ THUM III M.D. (NPI 1063438521) is an individual emergency medicine provider in New York, New York, licensed in New York (229567) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1063438521
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. FREDERICK LORENZ THUM IIICredential: M.D.
Location Address1 GUSTAVE L LEVY PL # 1149, MOUNT SINAI MEDICAL CTR, DEPT OF EMERGENCY MEDICINENew York, NY 10029-6504
Mailing Address1 Gustave L Levy Pl # 1149, Mount Sinai Medical Ctr, Dept Of Emergency MedicineNew York, NY 10029-6504 · (212) 241-6639
Phone(212) 241-6639
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateJuly 15, 2006
Last NPPES UpdateAugust 24, 2020
NPPES CertifiedAugust 24, 2020
✔ NPI 1063438521 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in NY · 229567✔ Licensed in MA · 227651
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1 GUSTAVE L LEVY PL # 1149, New York, NY 10029
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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. Frederick Lorenz Thum Iii 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 ID8527071182
PECOS Enrollment IDI20120514000191
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

5

Medicare enrollment records show Frederick Thum reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fpa Hospital Based
0.4 mi
Emergency Medicine
100TH ST AND MADISON AVE
New York, NY 10029
  • Reassigned Medicare billing, New York enrollment
  • 1,067 clinicians in this Medicare group
NPI 1427398676 (212) 824-8055
Icahn School Of Medicine At Mount Sinai
0.5 mi
Emergency Medicine
1468 MADISON AVE
New York, NY 10029
  • Reassigned Medicare billing, New York enrollment
  • Also billed through NPI 1427493113 (New York), NPI 1518228550 (New York)
  • 325 clinicians in this Medicare group
NPI 1346908662 (212) 241-6500
Icahn School Of Medicine At Mount Sinai
1.4 mi
Emergency Medicine
638 COLUMBUS AVE
New York, NY 10024
  • Reassigned Medicare billing, New York enrollment
  • 245 clinicians in this Medicare group
NPI 1124392238 (212) 731-7693
Icahn School Of Medicine At Mount Sinai
3.3 mi
Emergency Medicine
150 E 42ND ST FL 10
New York, NY 10017
  • Reassigned Medicare billing, New York enrollment
  • 208 clinicians in this Medicare group
NPI 1679083984 (646) 605-8119
Rite Medical Care PC
6.9 mi
Clinic/Center
504 MYRTLE AVE
Brooklyn, NY 11205
  • Reassigned Medicare billing, New York enrollment
  • 36 clinicians in this Medicare group
NPI 1619599578 (718) 534-0689

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 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.
65 services62 patients
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.
23 services23 patients
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428
This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.
16 services16 patients
Detection test by immunoassay with direct visual observation for influenza virus 87804
This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.
14 services13 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
14 services14 patients
X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
11 services11 patients

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
$102.04 typical visit price
range $65.69 – $198.19
Typical copayment $25.51 (range $16.42 – $49.54)
Most-billed visit code 99203
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.

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.

MACKENZIE SARAH RABAS MD
Student in an Organized Health Care Education/Training Program
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6639
KELLY CHEN
Physician Assistant
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6500
JULIAN SACKEY
Student in an Organized Health Care Education/Training Program
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (908) 590-0534
DR. BRADEN JAMES HEXOM M.D.
Emergency Medicine
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-0763
JORDYN WALKER PA-C
Physician Assistant
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6500
DR. TERENCE MARTIN HUGHES MD
Student in an Organized Health Care Education/Training Program
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6500
SHYAMALA SUBRAMANIAN
Student in an Organized Health Care Education/Training Program
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6500
DR. MEYLAKH MARATOVICH BARSHAY MD
Student in an Organized Health Care Education/Training Program
1 GUSTAVE L LEVY PL # 1149
NEW YORK, NY 10029
New York County (212) 241-6500

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 Frederick Thum's NPI number?

The NPI number for Frederick Thum is 1063438521. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Frederick Thum located?

Frederick Thum practices at 1 Gustave L Levy Pl # 1149 Mount Sinai Medical Ctr, Dept Of Emergency Medicine, New York, NY 10029. The listed phone number is (212) 241-6639.

What is Frederick Thum's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Frederick Thum enrolled in Medicare?

Yes. Frederick Thum 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 Frederick Thum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Thum reassigns Medicare benefits to 5 organizations: Fpa Hospital Based (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY) and Rite Medical Care PC (Brooklyn, NY). 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 Frederick Thum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Frederick Thum was last updated on August 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.