HARLAN WICHELHAUS, MD, PA
NPI 1992762991
Specialist in Texas City, TX
About Harlan Wichelhaus, Md, Pa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HARLAN WICHELHAUS, MD, PA (NPI 1992762991) is a healthcare organization registered as a specialist in Texas City, Texas and active in the NPI registry since April 2006. The organization holds a CLIA Microscopy certificate valid through July 24, 2028 and lists Harlan P Wichelhaus, Owner/physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Harlan Wichelhaus, Md, Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by October 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Harlan Wichelhaus, MD, PA, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate for Provider-Performed Microscopy Procedures (PPMP) 45D0976083
Harlan P Wichelhans, MD, PA · Texas City, TXFrequently 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 Harlan Wichelhaus, MD, PA's NPI number?
The NPI number for Harlan Wichelhaus, MD, PA is 1992762991. It was assigned to this organization in the NPPES registry on April 26, 2006.
Where is Harlan Wichelhaus, MD, PA located?
Harlan Wichelhaus, MD, PA is located at 1718 N Amburn Rd Suite B, Texas City, TX 77591. The listed phone number is (409) 935-1988.
What is Harlan Wichelhaus, MD, PA's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Harlan Wichelhaus, MD, PA enrolled in Medicare?
Yes. Harlan Wichelhaus, MD, PA is registered in the Medicare PECOS enrollment system.
When is Harlan Wichelhaus, MD, PA's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Texas, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Harlan Wichelhaus, MD, PA?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to Harlan Wichelhaus, MD, PA. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Harlan Wichelhaus, MD, PA hold a CLIA laboratory certificate?
Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 45D0976083) is associated with this NPI, valid through July 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Harlan Wichelhaus, MD, PA was last updated on August 7, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Harlan Wichelhaus, Md, Pa · NPI 1992762991
Specialist organization in Texas City, Texas. Organization record, active in the CMS NPPES registry since April 26, 2006.
## Identity
- **NPI:** 1992762991 (Entity type: Organization)
- **Enumerated:** April 26, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Harlan Wichelhaus, OWNER/PHYSICIAN
## Practice location
- **Address:** 1718 N AMBURN RD, SUITE B, Texas City, TX 77591-2490
- **Phone:** (409) 935-1988 · **Fax:** (409) 933-4898
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (Non-DME Part B, Texas, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Obstetrics/Gynecology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 7, 2012
- **Other identifiers:** Medicaid 0963910-01 (TN); Medicare ID-Type Unspecified 00306Y (TX); Medicaid 1720807-01 (TX)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1992762991) · Data from the CMS NPPES public registry.