DR. RAMON ALBERTO RIOJAS MD PHD
NPI 1225354145
Surgery in Baltimore, MD
About Dr. Ramon Alberto Riojas Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RAMON ALBERTO RIOJAS MD PHD (NPI 1225354145) is an individual surgery provider in Baltimore, Maryland, licensed in Mississippi (D0095246) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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. Ramon Alberto Riojas 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.
Medicare Billing Reassignments
4Medicare enrollment records show Ramon Riojas reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 65 clinicians in this Medicare group
Salisbury, MD 21801
- Reassigned Medicare billing, Maryland enrollment
- 531 clinicians in this Medicare group
Cumberland, MD 21502
- Reassigned Medicare billing, Maryland enrollment
- 318 clinicians in this Medicare group
Vacaville, CA 95687
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Northbay Physicians Surgery Center, LLC
- 516 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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Maryland Medical Center
Acute Care Hospitals · Baltimore, MDUniversity Of MD Capital Region Medical Center
Acute Care Hospitals · Upper Marlboro, MDTidalhealth Peninsula Regional, Inc
Acute Care Hospitals · Salisbury, MDUniversity Of MD Baltimore Washington Medical Center
Acute Care Hospitals · Glen Burnie, MDUmd Upper Chesapeake Medical Center
Acute Care Hospitals · Bel Air, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 Ramon Riojas's NPI number?
The NPI number for Ramon Riojas is 1225354145. It was assigned to this individual provider in the NPPES registry on April 16, 2010.
Where is Ramon Riojas located?
Ramon Riojas practices at 419 W Redwood St Ste 300, Baltimore, MD 21201. The listed phone number is (667) 214-1718.
What is Ramon Riojas's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Ramon Riojas enrolled in Medicare?
Yes. Ramon Riojas 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 Ramon Riojas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ramon Riojas reassigns Medicare benefits to 4 organizations: University Of Maryland Surgical Associates, PA (Baltimore, MD), Tidalhealth Specialty Care, LLC (Salisbury, MD), Upmc Western Maryland Health Services, LLC (Cumberland, MD) and Northbay Healthcare Group (Vacaville, CA). 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 Ramon Riojas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ramon Riojas accept?
Health plans from AmeriHealth Caritas Next list Ramon Riojas 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 Ramon Riojas affiliated with any hospitals?
According to CMS data, Ramon Riojas is affiliated with University Of Maryland Medical Center, University Of MD Capital Region Medical Center, Tidalhealth Peninsula Regional, Inc, University Of MD Baltimore Washington Medical Center and Umd Upper Chesapeake Medical Center.
When was this NPI record last updated?
The NPPES record for Ramon Riojas was last updated on July 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Ramon Alberto Riojas, MD PHD · NPI 1225354145
Surgery physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 16, 2010.
## Identity
- **NPI:** 1225354145 (Entity type: Individual)
- **Enumerated:** April 16, 2010
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** D0095246 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 419 W REDWOOD ST STE 300, Baltimore, MD 21201-7003
- **Phone:** (667) 214-1718 · **Fax:** (410) 706-6976
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Surgical Associates, PA (NPI 1962417634, Baltimore, MD); Tidalhealth Specialty Care, LLC (NPI 1619504735, Salisbury, MD); Upmc Western Maryland Health Services, LLC (NPI 1376302729, Cumberland, MD); Northbay Healthcare Group (NPI 1255483202, Vacaville, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** July 29, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225354145) · Data from the CMS NPPES public registry.