DR. SERENA MAO MD, PHD
NPI 1376170985
Radiology - Radiation Oncology in Bethesda, MD
About Dr. Serena Mao Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SERENA MAO MD, PHD (NPI 1376170985) is an individual radiation oncology provider in Bethesda, Maryland, licensed in Maryland (D0107136) and active in the NPI registry since March 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, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Serena Mao Md, Phd 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20817 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHESDA, MD 20817
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 Serena Mao's NPI number?
The NPI number for Serena Mao is 1376170985. It was assigned to this individual provider in the NPPES registry on March 24, 2020.
Where is Serena Mao located?
Serena Mao practices at 6420 Rockledge Dr Ste 1200, Bethesda, MD 20817. The listed phone number is (301) 896-2012.
What is Serena Mao's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Serena Mao enrolled in Medicare?
Yes. Serena Mao 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.
Is Serena Mao affiliated with any hospitals?
According to CMS data, Serena Mao is affiliated with Johns Hopkins Hospital, The.
When was this NPI record last updated?
The NPPES record for Serena Mao was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days 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. Serena Mao, MD, PHD · NPI 1376170985
Radiation Oncology physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since March 24, 2020.
## Identity
- **NPI:** 1376170985 (Entity type: Individual)
- **Enumerated:** March 24, 2020
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** D0107136 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 6420 ROCKLEDGE DR STE 1200, Bethesda, MD 20817-7839
- **Phone:** (301) 896-2012
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 2020
## Record status
- **NPPES last updated:** September 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1376170985) · Data from the CMS NPPES public registry.