DR. NATHANAEL S DAYES MD
NPI 1487851853
Surgery - Vascular Surgery in Cheverly, MD
About Dr. Nathanael S Dayes Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATHANAEL S DAYES MD (NPI 1487851853) is an individual vascular surgery provider in Cheverly, Maryland, licensed in Maryland (D73653) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Upmc Pinnacle Hospitals, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Nathanael S Dayes Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
7Medicare enrollment records show Nathanael Dayes reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20002
- Reassigned Medicare billing, District of Columbia enrollment
- 2,492 clinicians in this Medicare group
Washington, DC 20012
- Reassigned Medicare billing, District of Columbia enrollment
Baltimore, MD 21201
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 65 clinicians in this Medicare group
Littlestown, PA 17340
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,902 clinicians in this Medicare group
Shrewsbury, PA 17361
- Reassigned Medicare billing, Pennsylvania enrollment
- 468 clinicians in this Medicare group
Wormleysburg, PA 17043
- Reassigned Medicare billing, Pennsylvania enrollment
- 132 clinicians in this Medicare group
Richmond, VA 23227
- Reassigned Medicare billing, Virginia enrollment
- 386 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 6
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.
Upmc Pinnacle Hospitals
Acute Care Hospitals · Harrisburg, PABon Secours Maryview Medical Center
Acute Care Hospitals · Portsmouth, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20785 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.
CHEVERLY, MD 20785
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 Nathanael Dayes's NPI number?
The NPI number for Nathanael Dayes is 1487851853. It was assigned to this individual provider in the NPPES registry on June 29, 2007.
Where is Nathanael Dayes located?
Nathanael Dayes practices at 3001 Hospital Dr, Cheverly, MD 20785. The listed phone number is (667) 214-1718.
What is Nathanael Dayes's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Nathanael Dayes enrolled in Medicare?
Yes. Nathanael Dayes is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nathanael Dayes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathanael Dayes reassigns Medicare benefits to 7 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Washington, DC), N Dayes Consulting Firm (Washington, DC), University Of Maryland Surgical Associates, PA (Baltimore, MD), Pinnacle Health Medical Services (Littlestown, PA), Pinnacle Health Regional Physicians (Shrewsbury, PA) and 2 more organizations, listed in the Medicare section above. 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 Nathanael Dayes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nathanael Dayes affiliated with any hospitals?
According to CMS data, Nathanael Dayes is affiliated with Upmc Pinnacle Hospitals and Bon Secours Maryview Medical Center.
When was this NPI record last updated?
The NPPES record for Nathanael Dayes was last updated on December 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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. Nathanael S Dayes, MD · NPI 1487851853
Vascular Surgery physician in Cheverly, Maryland. Individual provider, active in the CMS NPPES registry since June 29, 2007.
## Identity
- **NPI:** 1487851853 (Entity type: Individual)
- **Enumerated:** June 29, 2007
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** D73653 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3001 HOSPITAL DR, Cheverly, MD 20785-1189
- **Phone:** (667) 214-1718 · **Fax:** (410) 328-5147
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1093016933, Washington, DC); N Dayes Consulting Firm (NPI 1922825116, Washington, DC); University Of Maryland Surgical Associates, PA (NPI 1962417634, Baltimore, MD); Pinnacle Health Medical Services (NPI 1669950440, Littlestown, PA); Pinnacle Health Regional Physicians (NPI 1619406097, Shrewsbury, PA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** December 16, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1487851853) · Data from the CMS NPPES public registry.