Dr. Gregory Wai, DO
- Medicare services, 2024
- 2,921
- Medicare patients, 2024
- 343
- Part D claims, 2024
- 571
- Publications
- 1
- MIPS score, 2024
- 97
- Practice address
- 1760 West 16th St, San Bernardino, CA 92411
- Practice phone
- Call (909) 473-1275
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Wai's professional email, personal email and mobile number
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Dr. Gregory Wai is a physiatrist in San Bernardino, California
Dr. Wai practices at Ballard Rehabilitation Hospital in San Bernardino, California, part of Vibra Healthcare.
Dr. Wai's NPI, 1467943902, was assigned on May 21, 2018. Dr. Wai graduated from Touro University California - Vallejo in 2018. Dr. Wai holds California license 20A17640.
- NPI
- 1467943902NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264817204
- NPI enumeration date
- May 21, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 473-1275
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Wai practices at Ballard Rehabilitation Hospital in San Bernardino, California
Dr. Wai's primary practice is Ballard Rehabilitation Hospital, at 1760 West 16th St, San Bernardino, CA 92411 in San Bernardino County. The practice phone is (909) 473-1275.
- Ballard Rehabilitation Hospital1760 West 16th St, San Bernardino, CA 92411 · San Bernardino CountyPhone(909) 473-1275
Source: Dmand AI Affiliation Data
Dr. Gregory Wai is affiliated with 5 sites of care and 2 medical groups
Dr. Wai's primary practice is Ballard Rehabilitation Hospital in San Bernardino, California, part of Vibra Healthcare. Dr. Wai is also affiliated with UCI Health - Orange. The medical group on file is National Health Rehabilitation. Dmand AI also links Dr. Wai to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Wai's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Wai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wai practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ballard Rehabilitation Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Wai is one of 1,234 physiatrists in California
Physical medicine and rehabilitation is Dr. Wai's primary specialty in the NPI Registry, under taxonomy code 208100000X. Dr. Wai is board certified in physical medicine & rehabilitation by the American Board of Physical Medicine and Rehabilitation. Dr. Wai is licensed in California.
Specialties and state licenses
- Physical medicine and rehabilitation, CaliforniaPrimary
Clinical focus
Dmand AI lists mobility impairment among the conditions Dr. Wai treats.
Physiatrists near Dr. Wai
Counts of physiatrists 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. Gregory Wai billed Medicare for 2,921 services in 2024
CMS data shows 2,921 Medicare services from Dr. Wai across 6 procedure codes in 2024, for 343 Medicare patients. Medicare paid $219,393 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Wai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,6702024: 2,17230%
- Other services
- 2023: 9102024: 74918%
Dr. Wai compared with the California median for physiatrists, 2024
- Dr. Wai
- California median
- Medicare services
- 2,921vs 8473.4 times
- Medicare patients
- 343vs 1522.3 times
- Part D claims
- 240vs 1182.0 times
Medians across 1,090 physiatrists in California with Dmand AI profiles that report each measure.
Dr. Wai'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Wai treated 343 Medicare patients in 2024, average age 80
CMS counts 343 Medicare patients who saw Dr. Wai in 2024. The largest group is 75 to 84, with 134 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.30, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Wai's median patient age at 64, with 44% women.
Dr. Wai's Medicare patients by age, 2024
Dr. Wai's Medicare patients by sex, 2024
- Women18955%
- Men15445%
Chronic conditions among Dr. Wai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis72%
- Mood disorders48%
- Diabetes45%
- Ischemic heart disease45%
- Chronic kidney disease43%
- Depression43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Wai wrote 571 Medicare Part D claims in 2024
In 2024, Dr. Wai wrote 571 Medicare Part D claims for 140 patients. 87% of them were for generic drugs. CMS names the drug for 240 of them, across 14 drugs with 11 or more claims each, at $8,900 in total drug cost. In 2023, CMS named 185 claims across 10 drugs.
Dr. Wai's Part D claims by kind of drug, 2024
- Generic498 claims87%
- Brand-name and other73 claims13%
Dr. Wai'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. Wai's Part D claims, 2024
- Opioids7%41 of 571 claims
- Antibiotics3%15 of 571 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: 1852024: 24030%
Drugs named by CMS: 14 in 2024, 10 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. Gregory Wai scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Wai for performance year 2024, reported as part of a group. Dr. Wai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Wai's MIPS scores, performance year 2024
- 97of 100Final score
- 85of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gregory Wai has 1 publication on record
Dmand AI links 1 paper to Dr. Wai in 2023. Dr. Wai's most frequent co-author is Mark H. Tuszynski, MD/PHD.
Dr. Wai's most frequent co-authors
Recent publications by Dr. Wai
See who Dr. Wai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wai works with, so you can find a warm path to the right physiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Wai graduated from Touro University California - Vallejo
Dr. Wai graduated from Touro University California - Vallejo in 2018.
- Medical school
- Board certified in physical medicine & rehabilitation
Source: Dmand AI Professional Profile Data
Dr. Gregory Wai accepts plans from 14 insurance carriers
Dr. Wai is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Wai accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory Wai'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)Clinician Public Reporting: Overall MIPS Performance (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 |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Gregory Wai
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. Gregory Wai's NPI number?
Dr. Gregory Wai's NPI number is 1467943902. It was assigned on May 21, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Wai?
Dr. Gregory Wai is a physiatrist in San Bernardino, California. The primary specialty in the NPI Registry is Physical Medicine & Rehabilitation Physician (taxonomy code 208100000X).
Where does Dr. Gregory Wai practice?
Dr. Wai practices at 1760 West 16th St, San Bernardino, CA 92411. Dr. Wai's primary practice is Ballard Rehabilitation Hospital in San Bernardino, California, part of Vibra Healthcare. Dmand AI also links Dr. Wai to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Gregory Wai's office phone number?
The practice phone on file for Dr. Wai is (909) 473-1275.
What is Dr. Gregory Wai's medical license number?
Dr. Wai holds California license 20A17640.
Which hospitals is Dr. Gregory Wai affiliated with?
Dr. Wai practices at Ballard Rehabilitation Hospital in San Bernardino, California. Dr. Wai is also affiliated with UCI Health - Orange. Dmand AI links Dr. Wai to 2 more hospitals.
What medical group is Dr. Gregory Wai part of?
Dr. Wai is linked to National Health Rehabilitation. Dmand AI links Dr. Wai to 1 more medical group.
Does Dr. Gregory Wai accept Medicare?
Yes. CMS data shows Dr. Wai billed Medicare for 2,921 services in 2024, and Dr. Wai accepts Medicare assignment.
What is Dr. Gregory Wai's MIPS score?
Dr. Wai's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Gregory Wai see?
CMS counts 343 Medicare patients who saw Dr. Wai in 2024, with an average age of 80.
Show 8 more questionsShow fewer questions
Is Dr. Gregory Wai board certified?
Yes. Dr. Wai is board certified in physical medicine & rehabilitation by the American Board of Physical Medicine and Rehabilitation.
What services does Dr. Gregory Wai bill to Medicare?
In 2024, Dr. Wai's most billed Medicare services were hospital inpatient care (99233), medicare service (G0316) and nursing facility care (99308).
Where did Dr. Gregory Wai go to medical school?
Dr. Wai graduated from Touro University California - Vallejo in 2018.
What drugs does Dr. Gregory Wai prescribe most?
In 2024 Medicare Part D data, Dr. Wai's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Pantoprazole Sodium.
How long has Dr. Gregory Wai been practicing?
Dr. Wai graduated from medical school in 2018, 8 years ago.
Does Dr. Gregory Wai do research?
Dmand AI links 1 publication to Dr. Wai.
Who does Dr. Gregory Wai publish with?
Dr. Wai's most frequent co-authors are Mark H. Tuszynski, MD/PHD (1 shared paper).
What insurance does Dr. Gregory Wai accept?
Dr. Wai is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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