ANN PORTER RDN, LDN
NPI 1578932844
Dietitian, Registered in Rockville, MD
About Ann Porter Rdn, Ldn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN PORTER RDN, LDN (NPI 1578932844) is an individual dietitian, registered in Rockville, Maryland, licensed in Maryland (DX3838) and active in the NPI registry since September 2015. She is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
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
Ann Porter Rdn, Ldn 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
2Medicare enrollment records show Ann Porter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockville, MD 20854
- Reassigned Medicare billing, District of Columbia enrollment
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 234 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20854 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.
ROCKVILLE, MD 20854
ROCKVILLE, MD 20854
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 Ann Porter's NPI number?
The NPI number for Ann Porter is 1578932844. It was assigned to this individual provider in the NPPES registry on September 17, 2015.
Where is Ann Porter located?
Ann Porter practices at 1201 Seven Locks Rd, Rockville, MD 20854. The listed phone number is (301) 263-7319.
What is Ann Porter's specialty?
The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.
Is Ann Porter enrolled in Medicare?
Yes. Ann Porter 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 Ann Porter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Porter reassigns Medicare benefits to 2 organizations: Nutrition On The Go Inc. (Rockville, MD) and Professional Services Of Holy Cross (Rockville, 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 Ann Porter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ann Porter was last updated on July 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Ann Porter, RDN, LDN · NPI 1578932844
Dietitian, Registered provider in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since September 17, 2015.
## Identity
- **NPI:** 1578932844 (Entity type: Individual)
- **Enumerated:** September 17, 2015
- **Primary specialty:** Dietitian, Registered · taxonomy 133V00000X
- **State license:** DX3838 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1201 SEVEN LOCKS RD, Rockville, MD 20854-2931
- **Phone:** (301) 263-7319
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Nutrition On The Go Inc. (NPI 1831635127, Rockville, MD); Professional Services Of Holy Cross (NPI 1548124951, Rockville, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** July 7, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1578932844) · Data from the CMS NPPES public registry.