Dr. John R. Gregory , MD
Surgery โข Billings, MT
801 N 29th St
Billings, MT 591010905
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 August 31, 2006; this date does not establish years in practice.
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Published CMS data list 96 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:
- 99213 โ Established patient outpatient office visit: 29 service units.
- 99214 โ Established patient outpatient office visit: 20 service units.
- 99204 โ New patient outpatient office visit: 19 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 all 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 23 Medicare Part D prescriptions, including refills, in 2019.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2019. Published rows only; this is not a quality measure.
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Published Part D records, 2019:
- Neupro (Rotigotine) โ 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2019. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full 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 Surgery in Billings, MT (2024, 16 clinicians with data). Median for this group: 299. Middle half: 142 to 337.
Fewer Medicare Part B services than 75% of clinicians listed under Surgery in Montana (2024, 70 clinicians with data). Median for this group: 194. Middle half: 108 to 337.
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 163 in 2020 to 96 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
801 N 29th St
Billings, MT 591010905
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: Billings Clinic. 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
University Of Colorado School Of Medicine, Denver
1975
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
115 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 $21,647 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 $16,841 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
23 standardized 30-day fills in 2019
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
$4,476 in 2019
The total cost of these prescriptions in 2019, 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, 2019.
Open Payments general payments, program year 2024
All general payments: $147.62 across 2 records.
By nature of payment
- Food and Beverage: $147.62 across 2 records.
Reporting-company totals
- INTUITIVE SURGICAL, INC.: $99.92 across 1 record.
- LeMaitre Vascular, Inc.: $47.70 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).
Years since graduation
51 years (graduated 1975)
CMS Doctors and Clinicians data list 1975 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
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Gregory 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. Gregory 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 Billings and Montana
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Surgery in Billings, MT (2024, 16 clinicians with data). Median for this group: 299. Middle half: 142 to 337.
Fewer Medicare Part B services than 75% of clinicians listed under Surgery in Montana (2024, 70 clinicians with data). Median for this group: 194. Middle half: 108 to 337.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Surgery in Billings, MT (2024, 16 clinicians with data). Median for this group: $27,446. Middle half: $20,953 to $43,083.
A lower Medicare-allowed amount than 60% of clinicians listed under Surgery in Montana (2024, 70 clinicians with data). Median for this group: $26,416. Middle half: $17,581 to $46,838.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Surgery in Billings, MT (2024, 16 clinicians with data). Median for this group: $20,618. Middle half: $16,682 to $33,011.
A lower Medicare payment amount than 60% of clinicians listed under Surgery in Montana (2024, 70 clinicians with data). Median for this group: $19,816. Middle half: $12,399 to $34,863.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Gregory are from 2019.
26 active clinicians are listed under Surgery with a practice address in Billings, MT (136 in Montana).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Billings
19.2% of these 26 clinicians have the CMS telehealth indicator.
73.1% of these 26 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 41% from 163 in 2020 to 96 in 2024.
- 2020: 163
- 2021: 146
- 2022: 148
- 2023: 120
- 2024: 96
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Medicare-allowed amount
Medicare-allowed amount decreased 24% from $28,352 in 2020 to $21,647 in 2024.
- 2020: $28,352
- 2021: $25,280
- 2022: $15,757
- 2023: $19,693
- 2024: $21,647
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Paid by Medicare
Paid by Medicare decreased 24% from $22,195 in 2020 to $16,841 in 2024.
- 2020: $22,195
- 2021: $19,161
- 2022: $12,600
- 2023: $15,141
- 2024: $16,841
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 12 in 2013 to 23 in 2019.
- 2013: 12
- 2014: 13
- 2017: 117
- 2018: 54
- 2019: 23
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30-day fills
30-day fills went from 12 in 2013 to 23 in 2019.
- 2013: 12
- 2014: 13
- 2017: 117
- 2018: 54
- 2019: 23
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Part D drug cost
Part D drug cost went from $81 in 2013 to $4,476 in 2019.
- 2013: $81
- 2014: $100
- 2017: $30,851
- 2018: $8,952
- 2019: $4,476
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $63.00 in 2020 to $147.62 in 2024.
- 2020: $63.00
- 2021: $1,058.77
- 2022: $86.69
- 2023: $200.86
- 2024: $147.62
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2019), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2024 (payments made January 1 โ December 31, 2024): fewer than 11 records totaling $147.62.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| INTUITIVE SURGICAL, INC. |
Food and Beverage
In-kind items and services
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Da Vinci Surgical System | General | $99.92 |
| LeMaitre Vascular, Inc. |
Food and Beverage
Cash or cash equivalent
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ARTEGRAFT VASCULAR GRAFT | General | $47.70 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
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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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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29 | 25 | $98.93 | $63.96 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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20 | 18 | $144.85 | $94.33 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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19 | 19 | $252.79 | $129.42 |
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22558
Fusion of lower spine bone through abdomen with partial removal of disc
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16 | 16 | $7150.50 | $905.63 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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12 | 12 | $140.50 | $79.72 |
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 2019.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Neupro | Rotigotine | 23 | 184 | $4,475.52 | โ |
Source: CMS Part D by Provider and Drug, 2019; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-02-10NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20181026001819
WY
6709921455
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
Billings Clinic
801 N 29th St, Billings, MT 591010905
Phone: 4062382500
Billings Clinic
201 Yellowstone Ave, Cody, WY 824149313
Phone: 3075277561
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)
Family Medicine
Doctor of Medicine (M.D.)
Physical Therapist
Physical Therapist
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Psychiatry & Neurology - Neurology
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated August 31, 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 Surgery Specialists in Billings
- Dr. John Pender, MD
- Michael Englehart
- Dr. Dennis Maier, MD
- Dr. Kathryn Hatch, MD
- Dr. Rachel Ott, MD
- Dr. Nathaniel Rieb, MD
Mailing Address
Po Box 35100
Billings, MT 591075100
Phone: 4062382500