Dr. Robert M Fields , DO
Emergency Medicine โข Ypsilanti, MI
5301 Mcauley Dr
Ypsilanti, MI 481971051
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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Dr. Robert Fields is listed in NPPES under Emergency Medicine.
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NPI assigned on June 26, 2006; this date does not establish years in practice.
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Published CMS data list 86 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99291 โ Critical care: 60 service units.
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 15 service units.
- 99223 โ Initial hospital care with moderate level of medical decision making: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 84 Medicare Part D prescriptions, including refills, in 2017.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2017. Published rows only; this is not a quality measure.
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Published Part D records, 2017:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) โ 31 prescription fills, including refills.
- Prednisone โ 20 prescription fills, including refills.
- Azithromycin โ 17 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2017. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Emergency Medicine in Ypsilanti, MI (2024, 19 clinicians with data). Median for this group: 229. Middle half: 154 to 317.
Fewer Medicare Part B services than 85% of clinicians listed under Emergency Medicine in Michigan (2024, 2,054 clinicians with data). Median for this group: 292. Middle half: 162 to 462.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 201 in 2020 to 86 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
5301 Mcauley Dr
Ypsilanti, MI 481971051
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Hospitalist Physicians Medical Group Of Michigan, Pc. 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
Michigan State University College Of Osteopathic Medicine
1998
What Public CMS Data Show
Emergency Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
68 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $16,614 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $13,118 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
84 standardized 30-day fills in 2017
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
$387 in 2017
The total cost of these prescriptions in 2017, 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 โ by Provider and Drug, 2017.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
28 years (graduated 1998)
CMS Doctors and Clinicians data list 1998 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
2006
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, โDoes your provider accept Medicare as full payment?โ
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. Fields 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. Fields 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 Ypsilanti and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Emergency Medicine in Ypsilanti, MI (2024, 19 clinicians with data). Median for this group: 229. Middle half: 154 to 317.
Fewer Medicare Part B services than 85% of clinicians listed under Emergency Medicine in Michigan (2024, 2,054 clinicians with data). Median for this group: 292. Middle half: 162 to 462.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Emergency Medicine in Ypsilanti, MI (2024, 19 clinicians with data). Median for this group: $35,612. Middle half: $24,791 to $49,992.
A lower Medicare-allowed amount than 80% of clinicians listed under Emergency Medicine in Michigan (2024, 2,054 clinicians with data). Median for this group: $37,444. Middle half: $21,734 to $58,971.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Emergency Medicine in Ypsilanti, MI (2024, 19 clinicians with data). Median for this group: $27,765. Middle half: $19,068 to $38,833.
A lower Medicare payment amount than 80% of clinicians listed under Emergency Medicine in Michigan (2024, 2,054 clinicians with data). Median for this group: $28,872. Middle half: $16,676 to $45,328.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Fields are from 2017.
24 active clinicians are listed under Emergency Medicine with a practice address in Ypsilanti, MI (3,087 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Ypsilanti
0% of these 24 clinicians have the CMS telehealth indicator.
75% of these 24 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 B services
Medicare Part B services decreased 57% from 201 in 2020 to 86 in 2024.
- 2020: 201
- 2021: 98
- 2022: 101
- 2023: 90
- 2024: 86
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Medicare-allowed amount
Medicare-allowed amount decreased 49% from $32,423 in 2020 to $16,614 in 2024.
- 2020: $32,423
- 2021: $22,503
- 2022: $22,827
- 2023: $19,747
- 2024: $16,614
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Paid by Medicare
Paid by Medicare decreased 50% from $26,378 in 2020 to $13,118 in 2024.
- 2020: $26,378
- 2021: $18,095
- 2022: $18,389
- 2023: $15,778
- 2024: $13,118
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 66% from 247 in 2013 to 84 in 2017.
- 2013: 247
- 2014: 441
- 2015: 519
- 2016: 474
- 2017: 84
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30-day fills
30-day fills decreased 66% from 247 in 2013 to 84 in 2017.
- 2013: 247
- 2014: 441
- 2015: 519
- 2016: 474
- 2017: 84
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Part D drug cost
Part D drug cost decreased 78% from $1,797 in 2013 to $387 in 2017.
- 2013: $1,797
- 2014: $4,160
- 2015: $4,925
- 2016: $4,449
- 2017: $387
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2017), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99291
Critical care, first 30-74 minutes
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60 | 41 | $887.00 | $215.46 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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15 | 13 | $412.00 | $118.56 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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11 | 11 | $1176.00 | $173.41 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2017.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 31 | 106 | $130.86 | 29 |
| Prednisone | Prednisone | 20 | 134 | $76.02 | 19 |
| Azithromycin | Azithromycin | 17 | 89 | $103.08 | 16 |
| Cephalexin | Cephalexin | 16 | 125 | $76.83 | 16 |
Source: CMS Part D by Provider and Drug, 2017; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-12-22NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - EMERGENCY MEDICINE
I20040603001318
MI
2961484852
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
Hospitalist Physicians Medical Group Of Michigan, Pc
2333 Biddle Ave, Wyandotte, MI 481924668
Phone: 9549395000
Hospitalist Physicians Medical Group Of Michigan, Pc
775 S Main St, Chelsea, MI 481181383
Phone: 9549395000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant - Medical
Physician Assistant (Certified)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Physician Assistant
Physician Assistant (Certified)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Emergency Medicine
Doctor of Medicine (M.D.)
Emergency Medicine - Emergency Medical Services
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 26, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Emergency Medicine Providers in Ypsilanti
- Dr. Lee Benjamin, MD
- Dr. David Black, MD
- Dr. Julieta Lacey, MD
- Dr. Lauren Kava, MD
- Dr. Daniel Micheller, MD
- Dr. Ann Hess, MD
Mailing Address
2000 Green Rd, Suite 300
Ann Arbor, MI 481051598
Phone: 7349953764