DR. JOEL VINCENT MERKWAN PH.D.
NPI 1699810879
Psychologist - Clinical in Yankton, SD
About Dr. Joel Vincent Merkwan Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOEL VINCENT MERKWAN PH.D. (NPI 1699810879) is an individual clinical provider in Yankton, South Dakota, licensed in North Dakota (393) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2005).
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. Joel Vincent Merkwan Ph.d. 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
3Medicare enrollment records show Joel Merkwan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Yankton, SD 57078
- Reassigned Medicare billing, South Dakota enrollment
Yankton, SD 57078
- Reassigned Medicare billing, South Dakota enrollment
- 11 clinicians in this Medicare group
Nome, AK 99762
- Reassigned Medicare billing, Alaska enrollment
- Also billed through NPI 1225101041 (Alaska)
- 193 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 57078 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
YANKTON, SD 57078
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 Joel Merkwan's NPI number?
The NPI number for Joel Merkwan is 1699810879. It was assigned to this individual provider in the NPPES registry on February 21, 2007.
Where is Joel Merkwan located?
Joel Merkwan practices at 327 Broadway Ave Ste 15, Yankton, SD 57078. The listed phone number is (605) 661-6128.
What is Joel Merkwan's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Joel Merkwan enrolled in Medicare?
Yes. Joel Merkwan 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 Joel Merkwan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joel Merkwan reassigns Medicare benefits to 3 organizations: Meridian Mental Health, LLC (Yankton, SD), State Of South Dakota (Yankton, SD) and Norton Sound Health Corporation (Nome, AK). 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 Joel Merkwan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joel Merkwan accept?
Health plans from Sanford Health Plan and Wellmark of South Dakota, Inc. list Joel Merkwan 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.
When was this NPI record last updated?
The NPPES record for Joel Merkwan was last updated on June 29, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Joel Vincent Merkwan, PH.D. · NPI 1699810879
Clinical provider in Yankton, South Dakota. Individual provider, active in the CMS NPPES registry since February 21, 2007.
## Identity
- **NPI:** 1699810879 (Entity type: Individual)
- **Enumerated:** February 21, 2007
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 393 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 327 BROADWAY AVE STE 15, Yankton, SD 57078-7800
- **Phone:** (605) 661-6128
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Meridian Mental Health, LLC (NPI 1871267435, Yankton, SD); State Of South Dakota (NPI 1124027586, Yankton, SD); Norton Sound Health Corporation (NPI 1154358232, Nome, AK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** June 29, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1699810879) · Data from the CMS NPPES public registry.