Dr. Steven C. Bast, MD
- Medicare services, 2023
- 569
- Part D claims, 2024
- 34
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Industry payments
- $1,384
- Practice address
- 255 E Bonita Ave, Pomona, CA 91767
- Practice phone
- Call (909) 596-7733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Bast's professional email, personal email and mobile number
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Dr. Steven C. Bast is an orthopedic surgeon in Pomona, California
Dr. Bast practices at Casa Colina Hospital and Centers for Healthcare in Pomona, California, part of Casa Colina Hospital and Centers for Healthcare.
Dr. Bast's NPI, 1659348621, was assigned on March 8, 2006. Dr. Bast graduated from University of Southern California Keck School of Medicine in 1994. Dr. Bast holds California license A055098.
- NPI
- 1659348621NPI Registry (opens in a new tab)
- NPI enumeration date
- March 8, 2006
- NPI status
- Active
- Practice phone
- (909) 596-7733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Steven C. Bast practices at Casa Colina Hospital and Centers for Healthcare in Pomona, California
Dr. Bast's primary practice is Casa Colina Hospital and Centers for Healthcare, at 255 E Bonita Ave, Pomona, CA 91767 in Los Angeles County. The practice phone is (909) 596-7733.
- Casa Colina Hospital and Centers for Healthcare255 E Bonita Ave, Pomona, CA 91767 · Los Angeles CountyPhone(909) 596-7733
Source: Dmand AI Affiliation Data
Dr. Steven C. Bast is affiliated with 2 sites of care
Dr. Bast's primary practice is Casa Colina Hospital and Centers for Healthcare in Pomona, California, part of Casa Colina Hospital and Centers for Healthcare. Dmand AI also links Dr. Bast to 1 ambulatory surgery center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Steven C. Bast's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bast practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Casa Colina Hospital and Centers for Healthcare | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Casa Colina Hospital and Centers for Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Steven C. Bast is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Bast's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Bast is licensed in California.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
Orthopedic surgeons near Dr. Bast
Counts of orthopedic 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. Steven C. Bast billed Medicare for 569 services in 2023
CMS data shows 569 Medicare services from Dr. Bast across 10 procedure codes in 2023. Medicare paid $31,745 for them. Every service was in an office.
Dr. Bast's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 3752023: 3711%
- Imaging
- 2022: 1322023: 1283%
- Drugs given in the office
- 2022: 342023: 5871%
- Surgery
- 2022: 122023: 12No change
Dr. Bast compared with the California median for orthopedic surgeons, 2023
- Dr. Bast
- California median
- Medicare services
- 569vs 68317% below
- Part D claims
- 17vs 7076% below
Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.
Dr. Bast's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Steven C. Bast's patients have a median age of 46
Across all payers, Dmand AI patient panel data puts Dr. Bast's median patient age at 46, with 46% women.
Dr. Bast's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women46%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. Steven C. Bast wrote 34 Medicare Part D claims in 2024
In 2024, Dr. Bast wrote 34 Medicare Part D claims for 16 patients. 100% of them were for generic drugs. CMS names the drug for 17 of them, across 1 drug with 11 or more claims each, at $20 in total drug cost. In 2023, CMS named 49 claims across 3 drugs.
Dr. Bast'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.
Drug classes CMS tracks in Dr. Bast's Part D claims, 2024
- Antibiotics50%17 of 34 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 492024: 1765%
Drugs named by CMS: 1 in 2024, 3 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
Dr. Steven C. Bast scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Bast for performance year 2024, reported as part of a group.
Dr. Bast's MIPS scores, performance year 2024
- 86of 100Final score
- 75.8of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Steven C. Bast received $1,384 in industry payments from 2016 to 2024
CMS Open Payments shows 23 general payments to Dr. Bast from 10 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 63% of the total. Arthrex, Inc. paid the most, $902.
General payments to Dr. Bast by program year, 2016 to 2024
General payments to Dr. Bast by kind, 2016 to 2024
- Food and beverage$87063%
- Travel and lodging$49436%
- Speaker and faculty fees$201%
Companies that paid Dr. Bast the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Steven C. Bast graduated from University of Southern California Keck School of Medicine
Dr. Bast graduated from University of Southern California Keck School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Steven C. Bast'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 Data |
| 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| 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. Steven C. Bast
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. Steven C. Bast's NPI number?
Dr. Steven C. Bast's NPI number is 1659348621. It was assigned on March 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steven C. Bast?
Dr. Steven C. Bast is an orthopedic surgeon in Pomona, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Steven C. Bast practice?
Dr. Bast practices at 255 E Bonita Ave, Pomona, CA 91767. Dr. Bast's primary practice is Casa Colina Hospital and Centers for Healthcare in Pomona, California, part of Casa Colina Hospital and Centers for Healthcare. Dmand AI also links Dr. Bast to 1 ambulatory surgery center.
What is Dr. Steven C. Bast's office phone number?
The practice phone on file for Dr. Bast is (909) 596-7733.
What is Dr. Steven C. Bast's medical license number?
Dr. Bast holds California license A055098.
Which hospitals is Dr. Steven C. Bast affiliated with?
Dr. Bast practices at Casa Colina Hospital and Centers for Healthcare in Pomona, California.
Does Dr. Steven C. Bast accept Medicare?
Yes. CMS data shows Dr. Bast billed Medicare for 569 services in 2023.
What is Dr. Steven C. Bast's MIPS score?
Dr. Bast's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
What services does Dr. Steven C. Bast bill to Medicare?
In 2023, Dr. Bast's most billed Medicare services were office visit, established patient (99213), diagnostic imaging (73562) and injected or infused drug (J0702).
Where did Dr. Steven C. Bast go to medical school?
Dr. Bast graduated from University of Southern California Keck School of Medicine in 1994.
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What drugs does Dr. Steven C. Bast prescribe most?
In 2024 Medicare Part D data, Dr. Bast's most prescribed drugs by claims were Amoxicillin.
Has Dr. Steven C. Bast received payments from drug or device companies?
CMS Open Payments shows $1,384 in general payments to Dr. Bast from 10 companies from 2016 to 2024. The largest total came from Arthrex, Inc.
How long has Dr. Steven C. Bast been practicing?
Dr. Bast graduated from medical school in 1994, 32 years ago.
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