DR. FRANKLIN LLERENA THELMO JR. DO
NPI 1861951790
Internal Medicine - Endocrinology, Diabetes & Metabolism in Wilmington, DE
About Dr. Franklin Llerena Thelmo Jr. Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FRANKLIN LLERENA THELMO JR. DO (NPI 1861951790) is an individual endocrinology, diabetes & metabolism provider in Wilmington, Delaware, licensed in Delaware (C2-0024462) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and maintains a secondary practice location in Abington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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. Franklin Llerena Thelmo Jr. Do 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 Reassignment
Medicare enrollment records show Franklin Thelmo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wilmington, DE 19801
- Reassigned Medicare billing, Delaware enrollment
- 1,531 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 3
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.
Union Hospital Of Cecil County
Acute Care Hospitals · Elkton, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19801 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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILMINGTON, DE 19801
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 Franklin Thelmo's NPI number?
The NPI number for Franklin Thelmo is 1861951790. It was assigned to this individual provider in the NPPES registry on March 19, 2019.
Where is Franklin Thelmo located?
Franklin Thelmo practices at 501 W 14th St Fl 4, Wilmington, DE 19801. The listed phone number is (302) 623-3475.
What is Franklin Thelmo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Franklin Thelmo enrolled in Medicare?
Yes. Franklin Thelmo 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 organization bills Medicare for Franklin Thelmo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Franklin Thelmo reassigns Medicare benefits to Christiana Care Health Services Inc (Wilmington, DE). 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 Franklin Thelmo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Franklin Thelmo accept?
Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, AmeriHealth Caritas Next and Highmark Blue Cross Blue Shield Delaware list Franklin Thelmo 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 Franklin Thelmo affiliated with any hospitals?
According to CMS data, Franklin Thelmo is affiliated with Union Hospital Of Cecil County.
When was this NPI record last updated?
The NPPES record for Franklin Thelmo was last updated on July 22, 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. Franklin Llerena Thelmo Jr., DO · NPI 1861951790
Endocrinology, Diabetes & Metabolism physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since March 19, 2019.
## Identity
- **NPI:** 1861951790 (Entity type: Individual)
- **Enumerated:** March 19, 2019
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** C2-0024462 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 501 W 14TH ST FL 4, Wilmington, DE 19801-1013
- **Phone:** (302) 623-3475 · **Fax:** (302) 623-3080
## 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:** Christiana Care Health Services Inc (NPI 1043853120, Wilmington, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Philadelphia College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** July 22, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1861951790) · Data from the CMS NPPES public registry.