Dr. Ryan Halas , DO
Pediatrics • Kalamazoo, MI
601 John St Ste M-351
Kalamazoo, MI 490075358
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on May 8, 2014; this date does not establish years in practice.
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Published CMS data list 155 Medicare Part D prescriptions, including refills, in 2018.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018. Published rows only; this is not a quality measure.
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Published Part D records, 2018:
- Lisinopril — 37 prescription fills, including refills.
- Amlodipine Besylate — 25 prescription fills, including refills.
- Atorvastatin Calcium — 25 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 37 in 2015 to 155 in 2018.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2015–2018.
Practice Location & Contact Primary Location
601 John St Ste M-351
Kalamazoo, MI 490075358
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Kalamazoo, MI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Bronson Methodist Hospital. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2014
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
187 standardized 30-day fills in 2018
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,243 in 2018
The total cost of these prescriptions in 2018, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $26.52 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
12 years (graduated 2014)
CMS Doctors and Clinicians data list 2014 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2014
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Halas has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Halas as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Kalamazoo and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Halas are from 2018.
56 active clinicians are listed under Pediatrics with a practice address in Kalamazoo, MI (2,181 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Kalamazoo
0% of these 56 clinicians have the CMS telehealth indicator.
7.1% of these 56 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 319% from 37 in 2015 to 155 in 2018.
- 2015: 37
- 2016: 161
- 2017: 171
- 2018: 155
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30-day fills
30-day fills increased 380% from 39 in 2015 to 187 in 2018.
- 2015: 39
- 2016: 187
- 2017: 210
- 2018: 187
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Part D drug cost
Part D drug cost went from $326 in 2015 to $1,243 in 2018.
- 2015: $326
- 2016: $6,505
- 2017: $1,940
- 2018: $1,243
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $30.44 in 2021 to $26.52 in 2025.
- 2021: $30.44
- 2022: $19.29
- 2023: $16.83
- 2024: $788.66
- 2025: $26.52
Sources: CMS Medicare Part D Prescribers (2018), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $26.52.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| LANTHEUS MEDICAL IMAGING, INC. |
Food and Beverage
In-kind items and services
|
DEFINITY | General | $26.52 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2018.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 37 | 1,331 | $125.15 | — |
| Amlodipine Besylate | Amlodipine Besylate | 25 | 978 | $113.96 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 25 | 865 | $294.85 | — |
| Metoprolol Succinate | Metoprolol Succinate | 24 | 726 | $295.09 | — |
| Losartan Potassium | Losartan Potassium | 17 | 510 | $55.45 | — |
| Potassium Chloride | Potassium Chloride | 14 | 540 | $162.49 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 13 | 570 | $196.10 | — |
Source: CMS Part D by Provider and Drug, 2018; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-07-14NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PEDIATRIC MEDICINE
I20210716002074
MI
6305062530
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Bronson Methodist Hospital
601 John St, Kalamazoo, MI 490075358
Phone: 2693416900
Secondary Practice Locations
1000 Oakland Dr
Kalamazoo, MI 490081282
Phone: 2693374400
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 601 JOHN ST STE M-351, KALAMAZOO, MI 490075358 (Tel: 2693418796)
NPI status registered as active in NPPES database
Registered at 1000 OAKLAND DR, KALAMAZOO, MI 490081282 (Tel: 2693374400)
Registered at 1000 OAKLAND DR, KALAMAZOO, MI 490081282 (Tel: 2693374400)
Recorded as RYAN HALAS, DO
Internal Medicine (license number reported to NPPES: MI 5101021012)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Kalamazoo
Healthcare providers in KalamazooMailing Address
1000 Oakland Dr
Kalamazoo, MI 490081282
Phone: 2693374400