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NITHIN KARNAN MD
NPI 1639069099
Internal Medicine in Mason City, IA

Active since July 08, 2025PECOS Enrolled
1010 4TH ST SW, SUITE 305, MASON CITY, IA 50401(641) 428-5700 Get Directions Write a Review

NPPES record last updated: July 8, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Nithin Karnan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NITHIN KARNAN MD (NPI 1639069099) is an individual internal medicine provider in Mason City, Iowa, licensed in Iowa (R-13421) and active in the NPI registry since July 2025. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639069099
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameNITHIN KARNANCredential: MD
Location Address1010 4TH ST SW, SUITE 305Mason City, IA 50401-2856
Mailing Address1010 4th St Sw, Suite 305Mason City, IA 50401-2856
Phone(641) 428-5700
Sole ProprietorNo
Enumeration DateJuly 8, 2025
NPPES CertifiedJuly 8, 2025
✔ NPI 1639069099 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 · R-13421
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.
1010 4TH ST SW, 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)

Nithin Karnan Md 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 20

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

LAURA SPICER
Pharmacist
1010 4TH ST SW
MASON CITY, IA 50401
Cerro Gordo County (641) 422-6105
DR. CHAD M MCCAMBRIDGE MD
Family Medicine
1010 4TH ST SW, SUITE 340
MASON CITY, IA 50401
Cerro Gordo County (641) 428-7766
SIDDHARTH VERMA DO
Student in an Organized Health Care Education/Training Program
1010 4TH ST SW, STE 305
MASON CITY, IA 50401
Cerro Gordo County (641) 428-5700
LUAN M BARGMAN PA
Physician Assistant
1010 4TH ST SW, SUITE 120
MASON CITY, IA 50401
Cerro Gordo County (641) 428-6020
MAGNETIC RESONANCE SERVICES PTR
Clinic/Center (Magnetic Resonance Imaging (MRI))
1010 4TH ST SW, SUITE 100
MASON CITY, IA 50401
Cerro Gordo County (641) 424-0102
WILLIAM D MATTHEWS M.D.
Radiology (Diagnostic Radiology)
1010 4TH ST SW, SUITE 100
MASON CITY, IA 50401
Cerro Gordo County (641) 424-0102
MR. TONY GENE PALS PHARMD
Pharmacist
1010 4TH ST SW
MASON CITY, IA 50401
Cerro Gordo County (641) 422-6105
DANIEL MICHELSON MD
Student in an Organized Health Care Education/Training Program
1010 4TH ST SW, STE 340
MASON CITY, IA 50401
Cerro Gordo County (641) 428-7766

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 Nithin Karnan's NPI number?

The NPI number for Nithin Karnan is 1639069099. It was assigned to this individual provider in the NPPES registry on July 8, 2025.

Where is Nithin Karnan located?

Nithin Karnan practices at 1010 4th St SW Suite 305, Mason City, IA 50401. The listed phone number is (641) 428-5700.

What is Nithin Karnan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nithin Karnan enrolled in Medicare?

Yes. Nithin Karnan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Nithin Karnan was last updated on July 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.