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NATHANIEL JAMES SPENCER M.D.
NPI 1710172689
Emergency Medicine in Brooklyn, NY

Active since September 13, 2007PECOS EnrolledAccepts Medicare Assignment
965 48TH ST, DEPT OF EMERGENCY MEDICINE, BROOKLYN, NY 11219(718) 283-6029 Get Directions Write a Review

NPPES record last updated: August 9, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Nathaniel James Spencer M.d. NPPES

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

NATHANIEL JAMES SPENCER M.D. (NPI 1710172689) is an individual emergency medicine provider in Brooklyn, New York, licensed in California (A112545) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1710172689
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameNATHANIEL JAMES SPENCERCredential: M.D.
Location Address965 48TH ST, DEPT OF EMERGENCY MEDICINEBrooklyn, NY 11219-2919
Mailing Address320 31st StManhattan Beach, CA 90266-3973 · (626) 590-6502
Phone(718) 283-6029
Sole ProprietorYes
Medical School CMSOtherGraduated 2006
Enumeration DateSeptember 13, 2007
Last NPPES UpdateAugust 9, 2012
✔ NPI 1710172689 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A112545
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.
965 48TH ST, Brooklyn, NY 11219
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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

Nathaniel James Spencer 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 ID749333136
PECOS Enrollment IDI20101108000615
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 Nathaniel Spencer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mission Viejo Emergency Medical Associates, Inc.
2,441 mi
Emergency Medicine
31872 COAST HWY
Laguna Beach, CA 92651
  • Reassigned Medicare billing, California enrollment
  • 110 clinicians in this Medicare group
NPI 1134355597 (844) 474-4019
Golden State Emergency Physicians Inc
2,453 mi
Emergency Medicine
1401 S GRAND AVE
Los Angeles, CA 90015
  • Reassigned Medicare billing, California enrollment
  • 169 clinicians in this Medicare group
NPI 1770886558 (855) 687-0618
Grand Avenue Emergency Physicians Medical Group Inc
2,457 mi
Emergency Medicine
2215 TRUXTUN AVE
Bakersfield, CA 93301
  • Reassigned Medicare billing, California enrollment
  • 163 clinicians in this Medicare group
NPI 1962913632 (330) 493-4443
West Hills Emergency Medical Associates, Inc
2,468 mi
Emergency Medicine
7300 MEDICAL CENTER DR
West Hills, CA 91307
  • Reassigned Medicare billing, California enrollment
  • 49 clinicians in this Medicare group
NPI 1275761249 (818) 676-4000
Team Physicians Of Northern California Medical Group Inc
2,549 mi
Emergency Medicine
5000 HOPYARD RD, SUITE 100
Pleasanton, CA 94588
  • Reassigned Medicare billing, California enrollment
  • 202 clinicians in this Medicare group
NPI 1649692716 (925) 924-1600

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 5

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
254 services243 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
161 services152 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
117 services110 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
85 services83 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
24 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11219 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
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.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANN KATZUR TSANG M.D.
Emergency Medicine
965 48TH ST, DEPT OF EMERGENCY MEDICINE
BROOKLYN, NY 11219
Kings County (718) 283-6031
DR. ALETHEA ELISHEVA GARBER MD
Emergency Medicine
965 48TH ST, DEPT OF EMERGENCY MEDICINE
BROOKLYN, NY 11219
Kings County (917) 587-1185
MARK SPEKTOR DO
Emergency Medicine
965 48TH ST, DEPARTMENT OF EMERGENCY MEDICINE
BROOKLYN, NY 11219
Kings County (718) 283-6031
DR. WAI TAN DI MD
Emergency Medicine
965 48TH ST
BROOKLYN, NY 11219
Kings County (718) 283-6029
DR. PLACID ANISSA BONE M.D.
Emergency Medicine
965 48TH ST
BROOKLYN, NY 11219
Kings County (718) 283-6031
ERIC CHOU MD
Emergency Medicine
965 48TH ST
BROOKLYN, NY 11219
Kings County (310) 400-2306
DR. BENJAMIN TSAI M.D.
Emergency Medicine
965 48TH ST
BROOKLYN, NY 11219
Kings County (718) 283-7222

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 Nathaniel Spencer's NPI number?

The NPI number for Nathaniel Spencer is 1710172689. It was assigned to this individual provider in the NPPES registry on September 13, 2007.

Where is Nathaniel Spencer located?

Nathaniel Spencer practices at 965 48th St Dept Of Emergency Medicine, Brooklyn, NY 11219. The listed phone number is (718) 283-6029.

What is Nathaniel Spencer's specialty?

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

Is Nathaniel Spencer enrolled in Medicare?

Yes. Nathaniel Spencer 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 Nathaniel Spencer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Spencer reassigns Medicare benefits to 5 organizations: Mission Viejo Emergency Medical Associates, Inc. (Laguna Beach, CA), Golden State Emergency Physicians Inc (Los Angeles, CA), Grand Avenue Emergency Physicians Medical Group Inc (Bakersfield, CA), West Hills Emergency Medical Associates, Inc (West Hills, CA) and Team Physicians Of Northern California Medical Group Inc (Pleasanton, CA). 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 Nathaniel Spencer'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 Nathaniel Spencer was last updated on August 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.