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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JAKE LEE MULLENBACH DO
NPI 1396440574
Internal Medicine in Mason City, IA

Active since April 05, 2023PECOS Enrolled
1631 4TH ST SW # 114B, MASON CITY, IA 50401(641) 428-6000 Get Directions Write a Review

NPPES record last updated: August 30, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Aug 30, 2026, Apr 5, 2023 (2 updates tracked since 2023).

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.

NPPES Registry Identity

NPI1396440574
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJAKE LEE MULLENBACHCredential: DO
Location Address1631 4TH ST SW # 114BMason City, IA 50401-1612
Mailing Address1631 4th St Sw # 114bMason City, IA 50401-1612 · (641) 428-6000
Phone(641) 428-6000
Sole ProprietorNo
Enumeration DateApril 5, 2023
Last NPPES UpdateAugust 30, 20262 updates tracked since enumeration
NPPES CertifiedAugust 30, 2026
✔ NPI 1396440574 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IA · DO-55611
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1631 4TH ST SW # 114B, Mason City, IA 50401
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jake Lee Mullenbach Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician 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.

New Patient
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EVELYN ENIT INGA
Internal Medicine
1631 4TH ST SW # 114B
MASON CITY, IA 50401
Cerro Gordo County (641) 428-6000

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 enrollment system.

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 14 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.