BETTY CHOU M.D.
NPI 1669423760
Obstetrics & Gynecology in Baltimore, MD
About Betty Chou M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BETTY CHOU M.D. (NPI 1669423760) is an individual obstetrics & gynecology provider in Baltimore, Maryland, licensed in Maryland (D60369) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Johns Hopkins University School Of Medicine (1999).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Betty Chou M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Betty Chou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21224
- 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
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
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 21224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
BALTIMORE, MD 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
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 Betty Chou's NPI number?
The NPI number for Betty Chou is 1669423760. It was assigned to this individual provider in the NPPES registry on May 13, 2006.
Where is Betty Chou located?
Betty Chou practices at 4940 Eastern Ave, Baltimore, MD 21224. The listed phone number is (410) 550-4605.
What is Betty Chou's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Betty Chou enrolled in Medicare?
Yes. Betty Chou is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Betty Chou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Betty Chou reassigns Medicare benefits to Johns Hopkins University (Baltimore, MD). The 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 Betty Chou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Betty Chou affiliated with any hospitals?
According to CMS data, Betty Chou is affiliated with Johns Hopkins Hospital, The.
When was this NPI record last updated?
The NPPES record for Betty Chou was last updated on February 5, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Betty Chou, M.D. · NPI 1669423760
Obstetrics & Gynecology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 13, 2006.
## Identity
- **NPI:** 1669423760 (Entity type: Individual)
- **Enumerated:** May 13, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** D60369 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4940 EASTERN AVE, Baltimore, MD 21224-2735
- **Phone:** (410) 550-4605
## 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:** Johns Hopkins University (NPI 1306810619, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 1999
## Record status
- **NPPES last updated:** February 5, 2013
- **Other identifiers:** Medicare PIN H775JOG824 (MD); Medicare UPIN H90450 (MD); Medicaid 402799000 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1669423760) · Data from the CMS NPPES public registry.