DR. EMILY AGER MD, MPH
NPI 1770105405
Emergency Medicine in San Francisco, CA
About Dr. Emily Ager Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EMILY AGER MD, MPH (NPI 1770105405) is an individual emergency medicine provider in San Francisco, California, licensed in Maryland (D0106551) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Emily Ager Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Emily Ager reassigns Medicare billing to 4 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 94116
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Bethesda, MD 20814
- Reassigned Medicare billing, Maryland enrollment
- 4,483 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDJohns Hopkins Bayview Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN FRANCISCO, CA 94143
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 Emily Ager's NPI number?
The NPI number for Emily Ager is 1770105405. It was assigned to this individual provider in the NPPES registry on May 15, 2020.
Where is Emily Ager located?
Emily Ager practices at 521 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (541) 240-1236.
What is Emily Ager's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Emily Ager enrolled in Medicare?
Yes. Emily Ager is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Emily Ager's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emily Ager reassigns Medicare benefits to 4 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Permanente Medical Group Inc (San Francisco, CA) and Johns Hopkins University (Bethesda, MD). 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 Emily Ager's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Emily Ager affiliated with any hospitals?
According to CMS data, Emily Ager is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.
When was this NPI record last updated?
The NPPES record for Emily Ager was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Emily Ager, MD, MPH · NPI 1770105405
Emergency Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 15, 2020.
## Identity
- **NPI:** 1770105405 (Entity type: Individual)
- **Enumerated:** May 15, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0106551 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 521 PARNASSUS AVE, San Francisco, CA 94143-2206
- **Phone:** (541) 240-1236
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 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); Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA); Johns Hopkins University (NPI 1578569240, Bethesda, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oregon Health Sciences University School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** May 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1770105405) · Data from the CMS NPPES public registry.