Dr. William G. Rainer Jr., MD
- Medicare services, 2018
- 200
- Part D claims, 2020
- 29
- Industry payments
- $226
- State licenses
- 3
- Year NPI issued
- 2006
- Practice address
- 800 S 3rd St, Montrose, CO 81401
- Practice phone
- Call (970) 240-2211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Montrose Regional Health- Hospital
Montrose, Colorado
Find Dr. Rainer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William G. Rainer Jr. is a general surgeon in Montrose, Colorado
Dr. Rainer practices at Montrose Regional Health- Hospital in Montrose, Colorado.
Dr. Rainer's NPI, 1821067190, was assigned on March 17, 2006. Dr. Rainer graduated from Royal College of Surgeons Ireland in 1984. Dr. Rainer's Colorado license number on file is 28307.
- NPI
- 1821067190NPI Registry (opens in a new tab)
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Practice phone
- (970) 240-2211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William G. Rainer Jr. practices at Montrose Regional Health- Hospital in Montrose, Colorado
Dr. Rainer's primary practice is Montrose Regional Health- Hospital, at 800 S 3rd St, Montrose, CO 81401 in Montrose County. The practice phone is (970) 240-2211.
- Montrose Regional Health- Hospital800 S 3rd St, Montrose, CO 81401 · Montrose CountyPhone(970) 240-2211
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William G. Rainer Jr. is affiliated with 1 site of care
Dr. Rainer's primary practice is Montrose Regional Health- Hospital in Montrose, Colorado.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. William G. Rainer Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rainer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montrose Regional Health- Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William G. Rainer Jr. is one of 504 general surgeons in Colorado
Surgery is Dr. Rainer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Rainer's licenses on file in 3 states: Colorado, Utah and Arizona.
Specialties and state licenses
- Surgery, ColoradoPrimary
- Utah license
- Arizona license
General surgeons near Dr. Rainer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William G. Rainer Jr. billed Medicare for 200 services in 2018
CMS data shows 200 Medicare services from Dr. Rainer across 6 procedure codes in 2018. Medicare paid $9,866 for them.
Dr. Rainer's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 962018: 11116%
- Surgery
- 2017: 502018: 4510%
- Other services
- 2017: 332018: 2815%
- Tests and treatments
- 2017: 202018: 1620%
Where Dr. Rainer's Medicare services took place, 2018
- In an office11156%
- In a facility8945%
Dr. Rainer compared with the Colorado median for general surgeons, 2018
- Dr. Rainer
- Colorado median
- Medicare services
- 200vs 10983% above
- Part D claims
- 29vs 316% below
Medians across 491 general surgeons in Colorado with Dmand AI profiles that report each measure.
Dr. Rainer's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Rainer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rainer and other general surgeons in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William G. Rainer Jr.'s patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Rainer's median patient age at 65, with 40% women.
Dr. Rainer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. William G. Rainer Jr. wrote 29 Medicare Part D claims in 2020
In 2020, Dr. Rainer wrote 29 Medicare Part D claims. They cover 2 drugs, with $1,655 in total drug cost. In 2019, CMS named 15 claims across 1 drug.
Dr. Rainer's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 152020: 2993%
Drugs named by CMS: 2 in 2020, 1 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William G. Rainer Jr. received $226 in industry payments from 2017 to 2025
CMS Open Payments shows 4 general payments to Dr. Rainer from 3 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $133.
General payments to Dr. Rainer by program year, 2017 to 2025
Companies that paid Dr. Rainer the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William G. Rainer Jr. has 7 awards and honors on record
Dmand AI lists 7 awards for Dr. Rainer, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Rainer
- 2014
- CMS Stage 1 EHR
- 1992
- Physicians Recognition Award
- 1984
- Abrahamson Medal-Biological Society
- 1983
- Honors: Biochemistry, Anæsthesia
- 1970
- Eagle Scout
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. William G. Rainer Jr. graduated from Royal College of Surgeons Ireland
Dr. Rainer graduated from Royal College of Surgeons Ireland in 1984. Dr. Rainer is a member of ACS, Colorado Chapter American College of Surgeons, Rocky Mountain Vascular Society and Southwest Surgical Congress.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William G. Rainer Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William G. Rainer Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William G. Rainer Jr.'s NPI number?
Dr. William G. Rainer Jr.'s NPI number is 1821067190. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William G. Rainer Jr.?
Dr. William G. Rainer Jr. is a general surgeon in Montrose, Colorado. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. William G. Rainer Jr. practice?
Dr. Rainer practices at 800 S 3rd St, Montrose, CO 81401. Dr. Rainer's primary practice is Montrose Regional Health- Hospital in Montrose, Colorado.
What is Dr. William G. Rainer Jr.'s office phone number?
The practice phone on file for Dr. Rainer is (970) 240-2211.
What is Dr. William G. Rainer Jr.'s medical license number?
Dr. Rainer's Colorado license number on file is 28307, one of the licenses on file in 3 states.
Which states has Dr. William G. Rainer Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Rainer in Colorado (1987 to 2023), Utah (1989 to 2022) and Arizona (1996 to 2021).
Does Dr. William G. Rainer Jr. accept Medicare?
Yes. CMS data shows Dr. Rainer billed Medicare for 200 services in 2018.
What services does Dr. William G. Rainer Jr. bill to Medicare?
In 2018, Dr. Rainer's most billed Medicare services were office visit, established patient (99212), surgery: digestive system (45380) and medicare service (G0500).
Where did Dr. William G. Rainer Jr. go to medical school?
Dr. Rainer graduated from Royal College of Surgeons Ireland in 1984.
What drugs does Dr. William G. Rainer Jr. prescribe most?
In 2020 Medicare Part D data, Dr. Rainer's most prescribed drugs by claims were Pantoprazole Sodium and Suprep.
Has Dr. William G. Rainer Jr. received payments from drug or device companies?
CMS Open Payments shows $226 in general payments to Dr. Rainer from 3 companies from 2017 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. William G. Rainer Jr. been practicing?
Dr. Rainer graduated from medical school in 1984, 42 years ago.
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