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

GREGORY N HAASE DO
NPI 1851357032
Internal Medicine in Warsaw, IN

Q: What is Gregory Haase's NPI number?

The NPI number for Gregory Haase is 1851357032. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Q: What is Gregory Haase's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregory Haase was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 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.

Active since April 25, 2006PECOS Enrolled

87.95/100

CMS Quality Rating

355 E 200 N, WARSAW, IN 46582(574) 372-5625(574) 372-5626 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 14, 2026, Apr 6, 2026, Apr 3, 2026 and 3 more (6 updates tracked since 2020).

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About Gregory N Haase Do NPPES

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

GREGORY N HAASE DO (NPI 1851357032) is an individual internal medicine provider in Warsaw, Indiana, licensed in Indiana (02000857A) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Lutheran Hospital Of Indiana, and is a graduate of Other (1981).

NPPES Registry Identity

NPI1851357032

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameGREGORY N HAASECredential: DO

Location Address355 E 200 NWarsaw, IN 46582-7855

Mailing Address11109 Parkview Plaza Dr # 117Fort Wayne, IN 46845-1701

Phone(574) 372-5625

Fax(574) 372-5626

Sole ProprietorNo

Medical School CMSOtherGraduated 1981

Enumeration DateApril 25, 2006

Last NPPES UpdateJuly 14, 20266 updates tracked since enumeration

NPPES CertifiedJuly 14, 2026

✔ NPI 1851357032 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IN · 02000857A

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.

355 E 200 N, Warsaw, IN 46582

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Other Identifiers 1

Medicaid100158930IN

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory N Haase 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.

PECOS PAC ID143328211

PECOS Enrollment IDI20070613000550

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.

Areas of Expertise CMS Part B claims 18

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.

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.

1,243 services376 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

697 services310 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

130 services130 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

114 services27 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.

52 services52 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

47 services46 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

36 services33 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

36 services33 patients

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.

29 services28 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

28 services14 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

24 services21 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

22 services22 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

19 services18 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428

This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.

15 services14 patients

Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) 87811

This is a test to detect COVID-19, the virus causing severe respiratory illness. It uses a method called immunoassay, which identifies the virus by its unique proteins. The test is directly observed for accuracy. It helps determine if you're currently infected.

12 services12 patients

Pneumococcal vaccine, 23-valent 90732

The 23-valent pneumococcal vaccine is an injection that helps protect against serious infections caused by 23 types of pneumococcal bacteria. It's vital for those at risk, like older adults or people with certain health conditions, to prevent pneumonia, meningitis, and bloodstream infections.

12 services12 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

12 services11 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

12 services12 patients

Hospital Affiliations CMS Care Compare 4

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

Lutheran Hospital Of Indiana

Acute Care Hospitals · Fort Wayne, IN

3/5 CMS rating

OwnershipProprietary

CMS Certification Number150017

Location7950 W Jefferson BlvdFort Wayne, IN 46804 · Allen County

Emergency services Birthing friendly

Goshen Hospital

Acute Care Hospitals · Goshen, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150026

Location200 High Park AveGoshen, IN 46526 · Elkhart County

Emergency services Birthing friendly

Parkview Whitley Hospital

Acute Care Hospitals · Columbia City, IN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150101

Location1260 E Sr 205Columbia City, IN 46725 · Whitley County

Emergency services Birthing friendly

Kosciusko Community Hospital

Acute Care Hospitals · Warsaw, IN

2/5 CMS rating

OwnershipProprietary

CMS Certification Number150133

Location2101 E Dubois DrWarsaw, IN 46580 · Kosciusko County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46582 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

$94.22 typical visit price

range $16.93 – $132.22

Typical copayment $23.55 (range $4.23 – $33.05)

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.

87.95/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

74.04

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 18

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

10 suppliers52 claims161 services$6.15 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

6 suppliers22 claims36 services$1.05 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604