DR. JOHN PALMER GREENE II MD
NPI 1205397841
Psychiatry & Neurology - Neurocritical Care in San Francisco, CA
About Dr. John Palmer Greene Ii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN PALMER GREENE II MD (NPI 1205397841) is an individual neurocritical care provider in San Francisco, California, licensed in California (A179068) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Emory University Hospital, and is a graduate of University Of Chicago, Pritzker School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 4
Accepted Insurance
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. John Palmer Greene Ii Md 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.
Medicare Billing Reassignments
5Medicare enrollment records show John Greene reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 clinicians in this Medicare group
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 3
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Emory University Hospital
Acute Care Hospitals · Atlanta, GAEmory University Hospital Midtown
Acute Care Hospitals · Atlanta, GAGrady Memorial Hospital
Acute Care Hospitals · Atlanta, GAMedicare 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.
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 John Greene's NPI number?
The NPI number for John Greene is 1205397841. It was assigned to this individual provider in the NPPES registry on March 27, 2019.
Where is John Greene located?
John Greene practices at 505 Parnassus Avenue, M798, San Francisco, CA 94143. The listed phone number is (415) 476-3891.
What is John Greene's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurocritical Care, with taxonomy code 2084A2900X.
Is John Greene enrolled in Medicare?
Yes. John Greene 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 John Greene's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Greene reassigns Medicare benefits to 5 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA), Emory Medical Care Foundation Inc (Atlanta, GA) and The Emory Clinic Inc (Atlanta, GA). 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 John Greene's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Greene accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list John Greene as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Greene affiliated with any hospitals?
According to CMS data, John Greene is affiliated with Emory University Hospital, Emory University Hospital Midtown and Grady Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Greene was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Dr. John Palmer Greene II, MD · NPI 1205397841
Neurocritical Care physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 27, 2019.
## Identity
- **NPI:** 1205397841 (Entity type: Individual)
- **Enumerated:** March 27, 2019
- **Primary specialty:** Psychiatry & Neurology - Neurocritical Care · taxonomy 2084A2900X
- **State license:** A179068 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 505 PARNASSUS AVENUE, M798, San Francisco, CA 94143-0114
- **Phone:** (415) 476-3891 · **Fax:** (415) 476-3428
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); Emory Medical Care Foundation Inc (NPI 1063678563, Atlanta, GA); The Emory Clinic Inc (NPI 1396798229, Atlanta, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** January 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1205397841) · Data from the CMS NPPES public registry.