HAROLD THIES MD
NPI 1447299540
Internal Medicine - Nephrology in Lake Success, NY
About Harold Thies Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAROLD THIES MD (NPI 1447299540) is an individual nephrology provider in Lake Success, New York, licensed in New York (140668) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Harold Thies Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Harold Thies reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Jericho, NY 11753
- Reassigned Medicare billing, New York enrollment
- 413 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 11042 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.
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 Harold Thies's NPI number?
The NPI number for Harold Thies is 1447299540. It was assigned to this individual provider in the NPPES registry on June 5, 2006.
Where is Harold Thies located?
Harold Thies practices at 2 Pro Health Plz, Lake Success, NY 11042. The listed phone number is (516) 622-6116.
What is Harold Thies's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Harold Thies enrolled in Medicare?
Yes. Harold Thies is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Harold Thies's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Harold Thies reassigns Medicare benefits to Optum Urgent Care, PLLC (Jericho, NY). 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 Harold Thies'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 Harold Thies was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Harold Thies, MD · NPI 1447299540
Nephrology physician in Lake Success, New York. Individual provider, active in the CMS NPPES registry since June 5, 2006.
## Identity
- **NPI:** 1447299540 (Entity type: Individual)
- **Enumerated:** June 5, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 140668 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 2 PRO HEALTH PLZ, Lake Success, NY 11042-1111
- **Phone:** (516) 622-6116
## 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:** Optum Urgent Care, PLLC (NPI 1285975797, Jericho, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1447299540) · Data from the CMS NPPES public registry.