Macular DegenerationRetinal DrusenRetinal Pigment Epithelium
Dr. David William Switzer Jr., MD
NPI1891931572PAC ID3274706742
- Medicare services, 2024
- 31,912
- Medicare patients, 2024
- 840
- Part D claims, 2024
- 146
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 1221 N 26th St, Billings, MT 59101
- Practice phone
- Call (406) 252-5681
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Billings Cataract & Laser Surgicenter
Surgery Center - Not Medicare-Certified · Billings, Montana
Find Dr. Switzer's professional email, personal email and mobile number
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Dr. David William Switzer Jr. is an ophthalmologist in Billings, Montana
Dr. Switzer practices at Billings Cataract & Laser Surgicenter in Billings, Montana.
Dr. Switzer's NPI, 1891931572, was assigned on December 30, 2008. Dr. Switzer graduated from Georgetown University School of Medicine in 2006. Dr. Switzer holds Montana license 12651.
NPI and contact details
- NPI
- 1891931572NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274706742
- NPI enumeration date
- December 30, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 252-5681
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David William Switzer Jr. practices at Billings Cataract & Laser Surgicenter in Billings, Montana
Dr. Switzer's primary practice is Billings Cataract & Laser Surgicenter, at 1221 N 26th St, Billings, MT 59101. The practice phone is (406) 252-5681.
- Billings Cataract & Laser Surgicenter1221 N 26th St, Billings, MT 59101Phone(406) 252-5681
Source: Dmand AI Affiliation Data
Dr. David William Switzer Jr. is affiliated with 3 sites of care and 1 medical group
Dr. Switzer's primary practice is Billings Cataract & Laser Surgicenter in Billings, Montana. Dr. Switzer is also affiliated with St. Vincent Regional Hospital. Dmand AI also links Dr. Switzer to 1 more group practice or clinic and 1 medical group, each named with a free account.
Billings Cataract & Laser SurgicenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David William Switzer Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Switzer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Billings Cataract & Laser Surgicenter | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David William Switzer Jr. is one of 48 ophthalmologists in Montana
Ophthalmology is Dr. Switzer's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Switzer is licensed in Montana.
Specialties and state licenses
- Ophthalmology, MontanaPrimary
Ophthalmologists near Dr. Switzer
Counts of ophthalmologists 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. David William Switzer Jr. billed Medicare for 31,912 services in 2024
CMS data shows 31,912 Medicare services from Dr. Switzer across 10 procedure codes in 2024, for 840 Medicare patients. Medicare paid $3,151,639 for them. Every service was in an office.
Medicare services, 202431,912
Medicare patients840
Paid by Medicare$3.2M
Procedure codes10
Dr. Switzer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 4,4212024: 22,683413%
- Tests and treatments
- 2023: 4,6092024: 5,24514%
- Surgery
- 2023: 2,5482024: 2,5801%
- Office and hospital visits
- 2023: 1,0742024: 1,40431%
Dr. Switzer compared with the Montana median for ophthalmologists, 2024
- Dr. Switzer
- Montana median
- Medicare services
- 31,912vs 2,68611.9 times
- Medicare patients
- 840vs 815Close to median
- Part D claims
- 90vs 51683% below
Medians across 53 ophthalmologists in Montana with Dmand AI profiles that report each measure.
Dr. Switzer's most billed Medicare procedure codes, 2024
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. Switzer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Switzer and other ophthalmologists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David William Switzer Jr. treated 840 Medicare patients in 2024, average age 79
CMS counts 840 Medicare patients who saw Dr. Switzer in 2024. The largest group is 75 to 84, with 308 patients. 72% of them have high blood pressure, and 58% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Switzer's median patient age at 78, with 57% women.
Medicare patients, 2024840
Average age79
Average risk score1.45
Also on Medicaid5%
Dr. Switzer's Medicare patients by age, 2024
Dr. Switzer's Medicare patients by sex, 2024
- Women51962%
- Men32138%
Chronic conditions among Dr. Switzer's Medicare patients, 2024
- High blood pressure72%
- High cholesterol58%
- Arthritis37%
- Diabetes29%
- Chronic kidney disease23%
- Ischemic heart disease23%
- Atrial fibrillation20%
- Depression20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Switzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David William Switzer Jr. wrote 146 Medicare Part D claims in 2024
In 2024, Dr. Switzer wrote 146 Medicare Part D claims for 40 patients. 74% of them were for generic drugs. CMS names the drug for 90 of them, across 2 drugs with 11 or more claims each, at $2,408 in total drug cost. In 2023, CMS named 139 claims across 6 drugs.
Part D claims, 2024146
Drugs named by CMS2
Total drug cost$2,408
Part D patients40
Dr. Switzer's Part D claims by kind of drug, 2024
- Generic108 claims74%
- Brand-name38 claims26%
Dr. Switzer's most prescribed drugs by claims, 2024
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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1392024: 9035%
Drugs named by CMS: 2 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. David William Switzer Jr. takes part in Medicare
Dr. Switzer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David William Switzer Jr. has 2 publications on record
Dmand AI links 2 papers to Dr. Switzer in 2011. The most frequent topics are Tomography, Optical Coherence. Dr. Switzer's most frequent co-author is Michael Engelbert, MD.
Papers2
Topics Dr. Switzer writes about most
- Tomography, Optical Coherence
Dr. Switzer's most frequent co-authors
Recent publications by Dr. Switzer
ChoroidColoring AgentsFluorescein Angiography
See who Dr. Switzer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Switzer works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David William Switzer Jr. received $42 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Switzer from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $42.
Companies that paid Dr. Switzer the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David William Switzer Jr. graduated from Georgetown University School of Medicine
Dr. Switzer graduated from Georgetown University School of Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David William Switzer 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. David William Switzer 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. David William Switzer Jr.'s NPI number?
Dr. David William Switzer Jr.'s NPI number is 1891931572. It was assigned on December 30, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. David William Switzer Jr.?
Dr. David William Switzer Jr. is an ophthalmologist in Billings, Montana. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. David William Switzer Jr. practice?
Dr. Switzer practices at 1221 N 26th St, Billings, MT 59101. Dr. Switzer's primary practice is Billings Cataract & Laser Surgicenter in Billings, Montana. Dmand AI also links Dr. Switzer to 1 group practice or clinic and 1 medical group.
What is Dr. David William Switzer Jr.'s office phone number?
The practice phone on file for Dr. Switzer is (406) 252-5681.
What is Dr. David William Switzer Jr.'s medical license number?
Dr. Switzer holds Montana license 12651.
Which hospitals is Dr. David William Switzer Jr. affiliated with?
Dr. Switzer is affiliated with St. Vincent Regional Hospital.
Does Dr. David William Switzer Jr. accept Medicare?
Yes. CMS data shows Dr. Switzer billed Medicare for 31,912 services in 2024, and Dr. Switzer accepts Medicare assignment.
How many Medicare patients does Dr. David William Switzer Jr. see?
CMS counts 840 Medicare patients who saw Dr. Switzer in 2024, with an average age of 79.
What services does Dr. David William Switzer Jr. bill to Medicare?
In 2024, Dr. Switzer's most billed Medicare services were injected or infused drug (J2777), eye exam or test (92134) and injected or infused drug (J0178).
Where did Dr. David William Switzer Jr. go to medical school?
Dr. Switzer graduated from Georgetown University School of Medicine in 2006.
Show 5 more questionsShow fewer questions
What drugs does Dr. David William Switzer Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Switzer's most prescribed drugs by claims were Ketorolac Tromethamine and Prednisolone Acetate.
Has Dr. David William Switzer Jr. received payments from drug or device companies?
CMS Open Payments shows $42 in general payments to Dr. Switzer from 1 company from 2021 to 2021. The largest total came from Alcon Laboratories Inc.
How long has Dr. David William Switzer Jr. been practicing?
Dr. Switzer graduated from medical school in 2006, 20 years ago.
Does Dr. David William Switzer Jr. do research?
Dmand AI links 2 publications to Dr. Switzer.
Who does Dr. David William Switzer Jr. publish with?
Dr. Switzer's most frequent co-authors are Michael Engelbert, MD (1 shared paper).
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