Dr. Waii Mak, MD
- Medicare services, 2024
- 183
- Medicare patients, 2024
- 99
- Part D claims, 2024
- 31
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 75 Nielson Street, Watsonville, CA 95076
- Practice phone
- Call (831) 724-4741
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mak's professional email, personal email and mobile number
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Dr. Waii Mak is a hospitalist in Watsonville, California
Dr. Mak practices at Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District.
Dr. Mak's NPI, 1699825406, was assigned on January 12, 2007. Dr. Mak graduated from New York Medical College in 1996. Dr. Mak holds California license A72101.
- NPI
- 1699825406NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850570300
- NPI enumeration date
- January 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (831) 724-4741
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Waii Mak practices at Watsonville Community Hospital in Watsonville, California
Dr. Mak's primary practice is Watsonville Community Hospital, at 75 Nielson Street, Watsonville, CA 95076 in Santa Cruz County. The practice phone is (831) 724-4741.
- Watsonville Community Hospital75 Nielson Street, Watsonville, CA 95076 · Santa Cruz CountyPhone(831) 724-4741
Source: Dmand AI Affiliation Data
Dr. Waii Mak is affiliated with 2 sites of care and 1 medical group
Dr. Mak's primary practice is Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Mak to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Waii Mak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mak practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Watsonville Community Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Waii Mak is one of 3,186 hospitalists in California
Hospitalist is Dr. Mak's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Mak is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Mak
Counts of hospitalists 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. Waii Mak billed Medicare for 183 services in 2024
CMS data shows 183 Medicare services from Dr. Mak across 5 procedure codes in 2024, for 99 Medicare patients. Medicare paid $16,087 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2902024: 18337%
Dr. Mak compared with the California median for hospitalists, 2024
- Dr. Mak
- California median
- Medicare services
- 183vs 43057% below
- Medicare patients
- 99vs 20151% below
- Part D claims
- 14vs 6980% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Mak'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. Waii Mak treated 99 Medicare patients in 2024, average age 76
CMS counts 99 Medicare patients who saw Dr. Mak in 2024. The largest group is 75 to 84, with 36 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 73% are also on Medicaid. Their average risk score is 3.25, 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. Mak's median patient age at 50, with 25% women.
Dr. Mak's Medicare patients by age, 2024
Dr. Mak's Medicare patients by sex, 2024
- Women4848%
- Men5152%
Chronic conditions among Dr. Mak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Chronic kidney disease56%
- Diabetes55%
- Arthritis45%
- Heart failure45%
- Mood disorders42%
- Depression37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women25%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Waii Mak wrote 31 Medicare Part D claims in 2024
In 2024, Dr. Mak wrote 31 Medicare Part D claims for 18 patients. 84% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $204 in total drug cost. In 2021, CMS named 39 claims across 2 drugs.
Dr. Mak's Part D claims by kind of drug, 2024
- Generic26 claims84%
- Brand-name and other5 claims16%
Dr. Mak's most prescribed drugs by claims, 2022
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. Mak's Part D claims, 2024
- Antibiotics39%12 of 31 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 392022: 1464%
Drugs named by CMS: 1 in 2022, 2 in 2021.
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. Waii Mak takes part in Medicare
Dr. Mak 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. Waii Mak graduated from New York Medical College
Dr. Mak graduated from New York Medical College in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Waii Mak'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) |
| 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. Waii Mak
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. Waii Mak's NPI number?
Dr. Waii Mak's NPI number is 1699825406. It was assigned on January 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Waii Mak?
Dr. Waii Mak is a hospitalist in Watsonville, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Waii Mak practice?
Dr. Mak practices at 75 Nielson Street, Watsonville, CA 95076. Dr. Mak's primary practice is Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District. Dmand AI also links Dr. Mak to 1 group practice or clinic.
What is Dr. Waii Mak's office phone number?
The practice phone on file for Dr. Mak is (831) 724-4741.
What is Dr. Waii Mak's medical license number?
Dr. Mak holds California license A72101.
Which hospitals is Dr. Waii Mak affiliated with?
Dr. Mak practices at Watsonville Community Hospital in Watsonville, California.
What medical group is Dr. Waii Mak part of?
Dr. Mak is linked to The Permanente Medical Group, Inc.
Does Dr. Waii Mak accept Medicare?
Yes. CMS data shows Dr. Mak billed Medicare for 183 services in 2024, and Dr. Mak accepts Medicare assignment.
How many Medicare patients does Dr. Waii Mak see?
CMS counts 99 Medicare patients who saw Dr. Mak in 2024, with an average age of 76.
What services does Dr. Waii Mak bill to Medicare?
In 2024, Dr. Mak's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and hospital inpatient care (99233).
Show 3 more questionsShow fewer questions
Where did Dr. Waii Mak go to medical school?
Dr. Mak graduated from New York Medical College in 1996.
What drugs does Dr. Waii Mak prescribe most?
In 2022 Medicare Part D data, Dr. Mak's most prescribed drugs by claims were Atorvastatin Calcium.
How long has Dr. Waii Mak been practicing?
Dr. Mak graduated from medical school in 1996, 30 years ago.
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