DR. NATHAN E MILLIKAN MD
NPI 1679542716
Internal Medicine - Cardiovascular Disease in Indianapolis, IN

Q: What is Nathan Millikan's NPI number?

The NPI number for Nathan Millikan is 1679542716. It was assigned to this individual provider in the NPPES registry on March 14, 2006.

Q: What is Nathan Millikan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Nathan Millikan was last updated on February 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.

Active since March 14, 2006PECOS EnrolledAccepts Medicare Assignment

8333 NAAB RD STE 420, INDIANAPOLIS, IN 46260(317) 338-6666 Get Directions Write a Review

NPPES record last updated: February 19, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Feb 19, 2025, Jul 26, 2022, Nov 12, 2018 and 1 more (4 updates tracked since 2016).

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About Dr. Nathan E Millikan Md NPPES

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

DR. NATHAN E MILLIKAN MD (NPI 1679542716) is an individual cardiovascular disease provider in Indianapolis, Indiana, licensed in Indiana (01043574A) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent Kokomo, and maintains a secondary practice location in Rushville.

NPPES Registry Identity

NPI1679542716

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. NATHAN E MILLIKANCredential: MD

Location Address8333 NAAB RD STE 420Indianapolis, IN 46260-1992

Mailing Address8333 Naab Rd Ste 420Indianapolis, IN 46260-1992

Phone(317) 338-6666

Sole ProprietorNo

Medical School CMSIndiana University School Of MedicineGraduated 1994

Enumeration DateMarch 14, 2006

Last NPPES UpdateFebruary 19, 20254 updates tracked since enumeration

NPPES CertifiedFebruary 19, 2025

✔ NPI 1679542716 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in IN · 01043574A

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License 01043574A (IN)

8333 NAAB RD STE 420, Indianapolis, IN 46260

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Secondary Practice Location 1

Location 11310 N Main StRushville, IN 46173-1116 · Phone (765) 932-7536 · Fax (765) 932-7535

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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. Nathan E Millikan Md 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.

PECOS PAC ID749194736

PECOS Enrollment IDI20070619000202

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.

Medicare Billing Reassignments

Medicare enrollment records show Nathan Millikan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St. Vincent Medical Group, Inc.

0.2 mi

Internal Medicine

8402 HARCOURT RD STE 120
Indianapolis, IN 46260

Reassigned Medicare billing, Indiana enrollment
945 clinicians in this Medicare group

NPI 1710708367 (317) 582-8600

Rush Memorial Hospital

45 mi

Critical Access

1300 N MAIN ST
Rushville, IN 46173

Reassigned Medicare billing, Indiana enrollment
93 clinicians in this Medicare group

NPI 1497726020 (765) 932-7420

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

661 services524 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

535 services445 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

270 services263 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

189 services162 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

115 services115 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

103 services103 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

65 services65 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

54 services45 patients

Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes 99451

This service involves a consulting physician assessing your health condition via a phone or internet interaction. The doctor will spend at least 5 minutes discussing your health concerns. Afterwards, a written report summarizing the findings and recommendations will be provided for your reference.

49 services43 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

39 services38 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

31 services31 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension St Vincent Kokomo

Acute Care Hospitals · Kokomo, IN

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number150010

Location1907 W Sycamore StKokomo, IN 46904 · Howard County

Emergency services Birthing friendly

Ascension St Vincent Anderson

Acute Care Hospitals · Anderson, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150088

Location2015 Jackson StAnderson, IN 46016 · Madison County

Emergency services Birthing friendly

St Vincent Heart Center

Acute Care Hospitals · Carmel, IN

5/5 CMS rating

OwnershipProprietary

CMS Certification Number150153

Location10580 N Meridian StCarmel, IN 46290 · Hamilton County

Emergency services

Ascension St Vincent Randolph

Critical Access Hospitals · Winchester, IN

OwnershipVoluntary non-profit - Private

CMS Certification Number151301

Location473 E Greenville AveWinchester, IN 47394 · Randolph County

Emergency services Birthing friendly

Rush Memorial Hospital

Critical Access Hospitals · Rushville, IN

OwnershipGovernment - Local

CMS Certification Number151304

Location1300 N Main StRushville, IN 46173 · Rush County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46260 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

$122.49 typical visit price

range $53.07 – $161.76

Typical copayment $30.62 (range $13.26 – $40.44)

Most-billed visit code 99204

Established Patient

$66.48 typical visit price

range $16.93 – $132.22

Typical copayment $16.62 (range $4.23 – $33.05)

Most-billed visit code 99213

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.

ANN KATHLEEN SCHMIT FNP-BC

Nurse Practitioner (Family)