Lester Jen Yip Ma
- Medicare services, 2024
- 1,038
- Medicare patients, 2024
- 358
- Part D claims, 2024
- 816
- Hospital affiliations
- 3
- Industry payments
- $86
- Practice address
- 2405 Shadelands Drive, Suite 200, Walnut Creek, CA 94598
- Practice phone
- Call (925) 935-6700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sequoia Surgical Pavilion
Surgery Center - Medicare-Certified · Walnut Creek, California
Find Lester Ma'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.
Lester Jen Yip Ma is a surgical physician assistant in Walnut Creek, California
Lester Ma practices at Sequoia Surgical Pavilion in Walnut Creek, California.
Lester Ma's NPI, 1336800275, was assigned on January 3, 2022. Lester Ma holds California license 62526.
- NPI
- 1336800275NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840659678
- NPI enumeration date
- January 3, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 935-6700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Lester Jen Yip Ma practices at Sequoia Surgical Pavilion in Walnut Creek, California
Lester Ma's primary practice is Sequoia Surgical Pavilion, at 2405 Shadelands Drive, Suite 200, Walnut Creek, CA 94598. The practice phone is (925) 935-6700.
- Sequoia Surgical Pavilion2405 Shadelands Drive, Suite 200, Walnut Creek, CA 94598Phone(925) 935-6700
Source: Dmand AI Affiliation Data
Lester Jen Yip Ma is affiliated with 5 sites of care and 1 medical group
Lester Ma's primary practice is Sequoia Surgical Pavilion in Walnut Creek, California. Lester Ma is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is Golden State Orthopedics & Spine. Dmand AI also links Lester Ma to 2 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Lester Jen Yip Ma's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Lester Ma practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sequoia Surgical Pavilion | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Lester Jen Yip Ma is one of 883 surgical physician assistants in California
Surgical is Lester Ma's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Lester Ma is licensed in California.
Specialties and state licenses
- Surgical physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists fibromyalgia and chronic pain, lower back pain, muscle pain, fibromyalgia, and limb pain, neck pain and spine problems, scoliosis and thoracic spine disorders among the conditions Lester Ma treats.
Surgical physician assistants near Lester Ma
Counts of surgical physician assistants 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
Lester Jen Yip Ma billed Medicare for 1,038 services in 2024
CMS data shows 1,038 Medicare services from Lester Ma across 16 procedure codes in 2024, for 358 Medicare patients. Medicare paid $69,756 for them.
Lester Ma's Medicare services by type, 2024
- Office and hospital visits554
- Imaging411
- Surgery73
Where Lester Ma's Medicare services took place, 2024
- In an office96593%
- In a facility737%
Lester Ma compared with the California median for surgical physician assistants, 2024
- Lester Ma
- California median
- Medicare services
- 1,038vs 2204.7 times
- Medicare patients
- 358vs 904.0 times
- Part D claims
- 775vs 1555.0 times
Medians across 656 surgical physician assistants in California with Dmand AI profiles that report each measure.
Lester Ma'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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Medicare shows one payer. Book a meeting to get commercial claims data for Lester Ma and other surgical physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Lester Jen Yip Ma treated 358 Medicare patients in 2024, average age 74
CMS counts 358 Medicare patients who saw Lester Ma in 2024. The largest group is 65 to 74, with 159 patients. 75% of them have arthritis, and 75% have high blood pressure. 36% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Lester Ma's median patient age at 66, with 53% women.
Lester Ma's Medicare patients by age, 2024
Lester Ma's Medicare patients by sex, 2024
- Women22663%
- Men13237%
Chronic conditions among Lester Ma's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Diabetes32%
- Anxiety29%
- Mood disorders27%
- Osteoporosis26%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Lester Ma's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women53%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Lester Jen Yip Ma wrote 816 Medicare Part D claims in 2024
In 2024, Lester Ma wrote 816 Medicare Part D claims for 208 patients. 100% of them were for generic drugs. CMS names the drug for 775 of them, across 13 drugs with 11 or more claims each, at $7,385 in total drug cost.
Lester Ma'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 Lester Ma's Part D claims, 2024
- Opioids18%150 of 816 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Lester Jen Yip Ma offers telehealth to Medicare patients
Lester Ma accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Lester Ma as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Lester Jen Yip Ma received $86 in industry payments in 2025
CMS Open Payments shows 3 general payments to Lester Ma from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Orthofix Medical, Inc. paid the most, $37.
Companies that paid Lester Ma the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Lester Jen Yip Ma'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Lester Jen Yip Ma
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Lester Jen Yip Ma's NPI number?
Lester Jen Yip Ma's NPI number is 1336800275. It was assigned on January 3, 2022, and it is active in the NPI Registry.
What does Lester Jen Yip Ma specialize in?
Lester Jen Yip Ma is a surgical physician assistant in Walnut Creek, California. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Lester Jen Yip Ma practice?
Lester Ma practices at 2405 Shadelands Drive, Suite 200, Walnut Creek, CA 94598. Lester Ma's primary practice is Sequoia Surgical Pavilion in Walnut Creek, California. Dmand AI also links Lester Ma to 2 hospitals and 1 group practice or clinic.
What is Lester Jen Yip Ma's office phone number?
The practice phone on file for Lester Ma is (925) 935-6700.
What is Lester Jen Yip Ma's medical license number?
Lester Ma holds California license 62526.
Which hospitals is Lester Jen Yip Ma affiliated with?
Lester Ma is affiliated with John Muir Medical Center, Walnut Creek. Dmand AI links Lester Ma to 2 more hospitals.
What medical group is Lester Jen Yip Ma part of?
Lester Ma is linked to Golden State Orthopedics & Spine.
Does Lester Jen Yip Ma accept Medicare?
Yes. CMS data shows Lester Ma billed Medicare for 1,038 services in 2024, and Lester Ma accepts Medicare assignment.
Does Lester Jen Yip Ma offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Lester Ma as offering telehealth services.
How many Medicare patients does Lester Jen Yip Ma see?
CMS counts 358 Medicare patients who saw Lester Ma in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Lester Jen Yip Ma bill to Medicare?
In 2024, Lester Ma's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and diagnostic imaging (72100).
What drugs does Lester Jen Yip Ma prescribe most?
In 2024 Medicare Part D data, Lester Ma's most prescribed drugs by claims were Gabapentin, Naproxen and Cyclobenzaprine HCl.
Has Lester Jen Yip Ma received payments from drug or device companies?
CMS Open Payments shows $86 in general payments to Lester Ma from 3 companies from 2025 to 2025. The largest total came from Orthofix Medical, Inc.
How long has Lester Jen Yip Ma been practicing?
Lester Ma graduated from medical school in 2022, 4 years ago.
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