JAKE LEE MULLENBACH DO
NPI 1396440574
Internal Medicine in Mason City, IA
About Jake Lee Mullenbach Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAKE LEE MULLENBACH DO (NPI 1396440574) is an individual internal medicine provider in Mason City, Iowa, licensed in Iowa (DO-55611) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (2023).
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
Jake Lee Mullenbach 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 Jake Mullenbach reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mason City, IA 50401
- Reassigned Medicare billing, Iowa enrollment
- 420 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercyone North Iowa Medical Center
Acute Care Hospitals · Mason City, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 50401 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.
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 Jake Mullenbach's NPI number?
The NPI number for Jake Mullenbach is 1396440574. It was assigned to this individual provider in the NPPES registry on April 5, 2023.
Where is Jake Mullenbach located?
Jake Mullenbach practices at 1631 4th St SW # 114B, Mason City, IA 50401. The listed phone number is (641) 428-6000.
What is Jake Mullenbach's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Jake Mullenbach enrolled in Medicare?
Yes. Jake Mullenbach 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 Jake Mullenbach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jake Mullenbach reassigns Medicare benefits to North Iowa Mercy Clinics (Mason City, IA). 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 Jake Mullenbach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jake Mullenbach accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 2 other insurers list Jake Mullenbach 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 Jake Mullenbach affiliated with any hospitals?
According to CMS data, Jake Mullenbach is affiliated with Mercyone North Iowa Medical Center.
When was this NPI record last updated?
The NPPES record for Jake Mullenbach was last updated on August 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.
# Jake Lee Mullenbach, DO · NPI 1396440574
Internal Medicine physician in Mason City, Iowa. Individual provider, active in the CMS NPPES registry since April 5, 2023.
## Identity
- **NPI:** 1396440574 (Entity type: Individual)
- **Enumerated:** April 5, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** DO-55611 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1631 4TH ST SW # 114B, Mason City, IA 50401-1612
- **Phone:** (641) 428-6000
## 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:** North Iowa Mercy Clinics (NPI 1588070072, Mason City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Des Moines University Of Osteopathic Medicine And Health Sciences, class of 2023
## Record status
- **NPPES last updated:** August 30, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1396440574) · Data from the CMS NPPES public registry.