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DR. JASON LAWRENCE GREENSPAN M.D.
NPI 1780626697
Emergency Medicine in Tarzana, CA

Active since June 12, 2006PECOS Enrolled
90/100
CMS Quality Rating
18321 CLARK ST, TARZANA, CA 91356(818) 708-5170(818) 705-2595 Get Directions Write a Review

NPPES record last updated: June 13, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Jason Lawrence Greenspan M.d. NPPES

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

DR. JASON LAWRENCE GREENSPAN M.D. (NPI 1780626697) is an individual emergency medicine provider in Tarzana, California, licensed in California (A70847) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1780626697
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. JASON LAWRENCE GREENSPANCredential: M.D.
Location Address18321 CLARK STTarzana, CA 91356-3501
Mailing AddressPo Box 660640Arcadia, CA 91066-0640 · (626) 447-0296 · Fax (626) 447-6057
Phone(818) 708-5170
Fax(818) 705-2595
Sole ProprietorNo
Enumeration DateJune 12, 2006
Last NPPES UpdateJune 13, 2008
✔ NPI 1780626697 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 · A70847
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.
18321 CLARK ST, Tarzana, CA 91356
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Other Identifiers 5

Medicaid00A708470CA
Medicare PINWA70847ACA
Medicare PINWA70847CCA
Medicare UPINH68530CA
Medicare PINWA70847CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jason Lawrence Greenspan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

7

Medicare enrollment records show Jason Greenspan reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tarzana Emergency Medical Associates
Same address
Emergency Medicine
18321 CLARK ST
Tarzana, CA 91356
  • Reassigned Medicare billing, California enrollment
  • 66 clinicians in this Medicare group
NPI 1235176702 (310) 321-0143
Pacifica Emergency Medical Associates
2.7 mi
Emergency Medicine
16237 VENTURA BLVD
Encino, CA 91436
  • Reassigned Medicare billing, California enrollment
  • 58 clinicians in this Medicare group
NPI 1053350975 (310) 379-2134
Valley Presbyterian Emergency Medical Associates
4.3 mi
Emergency Medicine
15107 VANOWEN ST
Van Nuys, CA 91405
  • Reassigned Medicare billing, California enrollment
  • 86 clinicians in this Medicare group
NPI 1033133103 (310) 321-0143
Sherman Oaks Emergency Medical Associates
4.8 mi
Emergency Medicine
4929 VAN NUYS BLVD
Sherman Oaks, CA 91403
  • Reassigned Medicare billing, California enrollment
  • 63 clinicians in this Medicare group
NPI 1518904150 (310) 379-2134
West Hills Emergency Medical Associates, Inc
6.1 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
Edwards MD PC
229 mi
Emergency Medicine
1155 RAIDERS WAY
Henderson, NV 89052
  • Reassigned Medicare billing, Nevada enrollment
  • 43 clinicians in this Medicare group
NPI 1902642994 (702) 963-7000
Irv Edwards MD PC
238 mi
Emergency Medicine
1050 W GALLERIA DR
Henderson, NV 89011
  • Reassigned Medicare billing, Nevada enrollment
  • 62 clinicians in this Medicare group
NPI 1013884352 (702) 963-7000

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.

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.
256 services254 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.
200 services195 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.
134 services131 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.
95 services93 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.
19 services19 patients
Emergency department visit with straightforward medical decision making 99282
An emergency department visit for a mild to moderate issue is when you seek immediate medical attention for a non-life-threatening condition. This could include minor injuries, moderate pain, or illnesses like the flu. During the visit, healthcare professionals assess your condition, provide treatment, and may recommend follow-up care.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91356 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

90/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.81
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. JONATHAN ANDREW PRINCE M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
ART ONCOLOGY INC
Radiology (Diagnostic Radiology)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (215) 313-0024
DR. NEIL ERIC CANBY M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
KELLY ANN ARCHER KAMINSKI OTR/L
Occupational Therapist
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 881-0800
DR. FREDERICK THEODORE DENNIS M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
KIMBERLY DANG PHAM
Pharmacist
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 881-0800
CAROL V GREENE NNP
Nurse Practitioner (Neonatal)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5242
CARMEN BOTERO, MD
Pediatrics (Pediatric Critical Care Medicine)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (208) 676-9080

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 Jason Greenspan's NPI number?

The NPI number for Jason Greenspan is 1780626697. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Jason Greenspan located?

Jason Greenspan practices at 18321 Clark St, Tarzana, CA 91356. The listed phone number is (818) 708-5170.

What is Jason Greenspan's specialty?

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

Is Jason Greenspan enrolled in Medicare?

Yes. Jason Greenspan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jason Greenspan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Greenspan reassigns Medicare benefits to 7 organizations: Tarzana Emergency Medical Associates (Tarzana, CA), Pacifica Emergency Medical Associates (Encino, CA), Valley Presbyterian Emergency Medical Associates (Van Nuys, CA), Sherman Oaks Emergency Medical Associates (Sherman Oaks, CA), West Hills Emergency Medical Associates, Inc (West Hills, CA) and 2 more organizations, listed in the Medicare section above. 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 Jason Greenspan'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 Jason Greenspan was last updated on June 13, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.