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DR. JONATHAN DAVID GREIN MD
NPI 1295956092
Internal Medicine in Los Angeles, CA

Active since May 01, 2007PECOS Enrolled
87.67/100
CMS Quality Rating
8635 W 3RD ST, SUITE 1150-W, LOS ANGELES, CA 90048(310) 423-5574 Get Directions Write a Review

NPPES record last updated: March 23, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Jonathan David Grein Md NPPES

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

DR. JONATHAN DAVID GREIN MD (NPI 1295956092) is an individual internal medicine provider in Los Angeles, California, licensed in California (A94549) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295956092
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JONATHAN DAVID GREINCredential: MD
Location Address8635 W 3RD ST, SUITE 1150-WLos Angeles, CA 90048-6101
Mailing Address8635 W 3rd St, Suite 1150-wLos Angeles, CA 90048-6101 · (310) 423-5574
Phone(310) 423-5574
Sole ProprietorYes
Enumeration DateMay 1, 2007
Last NPPES UpdateMarch 23, 2010
✔ NPI 1295956092 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A94549
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.
Also ListedInternal Medicine · Infectious DiseaseTaxonomy 207RI0200X · License A94549 (CA)
8635 W 3RD ST, Los Angeles, CA 90048
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jonathan David Grein Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90048 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

87.67/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.86
Promoting Interoperability99
Improvement Activities40
Cost49.42

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.

I-HSUAN LIN DPT
Physical Therapist
8635 W 3RD ST, SUITE 465W
LOS ANGELES, CA 90048
Los Angeles County (310) 657-8591
JAY W MARKS MD
Internal Medicine (Gastroenterology)
8635 W 3RD ST, SUITE #880
LOS ANGELES, CA 90048
Los Angeles County (323) 469-4499
JEFFREY FREDRICK CAREN M.D.
Specialist
8635 W 3RD ST, 890W
LOS ANGELES, CA 90048
Los Angeles County (310) 659-0714
HART C.M. COHEN
Specialist
8635 W 3RD ST, 450W
LOS ANGELES, CA 90048
Los Angeles County (310) 652-5954
JAY J STEIN M.D.
Urology
8635 W 3RD ST, SUITE 460W
LOS ANGELES, CA 90048
Los Angeles County (310) 652-8810
MR. DUDLEY S DANOFF MD
Urology
8635 W 3RD ST, SUITE 1 WEST
LOS ANGELES, CA 90048
Los Angeles County (310) 854-9898
RODRIGO F ALBAN M.D.
Surgery (Surgical Critical Care)
8635 W 3RD ST, SUITE 650W
LOS ANGELES, CA 90048
Los Angeles County (310) 423-8513
COR MEDICAL GROUP, INC
Specialist
8635 W 3RD ST, SUITE 890W
LOS ANGELES, CA 90048
Los Angeles County (310) 659-0714

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 Jonathan Grein's NPI number?

The NPI number for Jonathan Grein is 1295956092. It was assigned to this individual provider in the NPPES registry on May 1, 2007.

Where is Jonathan Grein located?

Jonathan Grein practices at 8635 W 3rd St Suite 1150-W, Los Angeles, CA 90048. The listed phone number is (310) 423-5574.

What is Jonathan Grein's specialty?

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

Is Jonathan Grein enrolled in Medicare?

Yes. Jonathan Grein is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Jonathan Grein was last updated on March 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.