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NICHOLAS HOUNTRAS M.D.
NPI 1184038101
Internal Medicine in Grand Rapids, MI

Active since June 18, 2014PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
100 MICHIGAN ST NE, MC 127, GRAND RAPIDS, MI 49503(616) 391-3139(616) 391-3044 Get Directions Write a Review

NPPES record last updated: February 17, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 17, 2021, Jun 25, 2018 (2 updates tracked since 2018).

About Nicholas Hountras M.d. NPPES

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

NICHOLAS HOUNTRAS M.D. (NPI 1184038101) is an individual internal medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301105934) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Spectrum Health United Hospital, and is a graduate of Wright State University Boonshoft School Of Medicine (2014).

NPPES Registry Identity

NPI1184038101
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameNICHOLAS HOUNTRASCredential: M.D.
Location Address100 MICHIGAN ST NE, MC 127Grand Rapids, MI 49503
Mailing Address100 Michigan St Ne # Mc845Grand Rapids, MI 49503-2560 · (616) 486-6790 · Fax (616) 487-6702
Phone(616) 391-3139
Fax(616) 391-3044
Sole ProprietorNo
Medical School CMSWright State University Boonshoft School Of MedicineGraduated 2014
Enumeration DateJune 18, 2014
Last NPPES UpdateFebruary 17, 20212 updates tracked since enumeration
NPPES CertifiedFebruary 17, 2021
✔ NPI 1184038101 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301105934
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.
Also ListedPediatricsTaxonomy 208000000X · License 4301105934 (MI)
100 MICHIGAN ST NE, Grand Rapids, MI 49503
Open in Google Maps ↗

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.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

Nicholas Hountras M.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.

PECOS PAC ID2860617800
PECOS Enrollment IDI20170217000716
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 Reassignment

Medicare enrollment records show Nicholas Hountras reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Spectrum Health Primary Care Partners
0.1 mi
Pediatric Endocrinology
35 MICHIGAN ST NE STE 1800
Grand Rapids, MI 49503
  • Reassigned Medicare billing, Michigan enrollment
  • 2,446 clinicians in this Medicare group
NPI 1326599671 (616) 391-3933

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
101 services56 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
77 services36 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
57 services57 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
19 services19 patients

Hospital Affiliations CMS Care Compare 2

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

Spectrum Health United Hospital

Acute Care Hospitals · Greenville, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number230035
Location615 S Bower StreetGreenville, MI 48838 · Montcalm County
Birthing friendly

Spectrum Health

Acute Care Hospitals · Grand Rapids, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230038
Location100 Michigan St NEGrand Rapids, MI 49503 · Kent County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.54
Promoting Interoperability100
Improvement Activities40

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.

MAUREEN TAN PEDRES M.D.
Internal Medicine
100 MICHIGAN ST NE, SUITE A721
GRAND RAPIDS, MI 49503
Kent County (616) 391-3139
MATTHEW H ARMSTRONG MD
Anesthesiology
100 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-1510
ALINE DE QUADROS TEIXEIRA MD
Internal Medicine
100 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-3139
DR. LINDSEY DANIELLE CONRADO PT, DPT
Physical Therapist
100 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (161) 639-1177
DANIEL H. ROBINSON D.O.
Anesthesiology
100 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-1510
MARK GREENWOOD DO
Emergency Medicine
100 MICHIGAN ST NE, MC 71
GRAND RAPIDS, MI 49503
Kent County (616) 391-5310
RAYMOND SCUREK MD
Emergency Medicine
100 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 391-1680
MRS. RACHEL LEIGH VANSTRIEN PA-C
Physician Assistant
100 MICHIGAN ST NE, SUITE 8861
GRAND RAPIDS, MI 49503
Kent County (616) 391-0800

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 Nicholas Hountras's NPI number?

The NPI number for Nicholas Hountras is 1184038101. It was assigned to this individual provider in the NPPES registry on June 18, 2014.

Where is Nicholas Hountras located?

Nicholas Hountras practices at 100 Michigan St NE Mc 127, Grand Rapids, MI 49503. The listed phone number is (616) 391-3139.

What is Nicholas Hountras's specialty?

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

Is Nicholas Hountras enrolled in Medicare?

Yes. Nicholas Hountras 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 Nicholas Hountras's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Hountras reassigns Medicare benefits to Spectrum Health Primary Care Partners (Grand Rapids, MI). 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 Nicholas Hountras's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Hountras accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list Nicholas Hountras 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 Nicholas Hountras affiliated with any hospitals?

According to CMS data, Nicholas Hountras is affiliated with Spectrum Health United Hospital and Spectrum Health.

When was this NPI record last updated?

The NPPES record for Nicholas Hountras was last updated on February 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.