Mary D. Surdilla, PA-C
- Medicare services, 2024
- 152
- Medicare patients, 2024
- 131
- Part D claims, 2024
- 209
- Industry payments
- $53
- Affiliated sites
- 1
- Practice address
- 325 Distel Cir, Los Altos, CA 94022
- Practice phone
- Call (650) 498-3600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Fremont
Los Altos, California
Find Mary Surdilla'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.
Mary D. Surdilla is a physician assistant in Los Altos, California
Mary Surdilla practices at Surgery Center Fremont in Los Altos, California.
Mary Surdilla's NPI, 1407197437, was assigned on March 15, 2013. Mary Surdilla holds California license PA 15975.
- NPI
- 1407197437NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648578286
- NPI enumeration date
- March 15, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (650) 498-3600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary D. Surdilla practices at Surgery Center Fremont in Los Altos, California
Mary Surdilla's primary practice is Surgery Center Fremont, at 325 Distel Cir, Los Altos, CA 94022 in Santa Clara County. The practice phone is (650) 498-3600.
- Surgery Center Fremont325 Distel Cir, Los Altos, CA 94022 · Santa Clara CountyPhone(650) 498-3600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mary D. Surdilla is affiliated with 2 sites of care and 1 medical group
Mary Surdilla's primary practice is Surgery Center Fremont in Los Altos, California. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Mary Surdilla to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mary D. Surdilla's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Surdilla practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Fremont | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary D. Surdilla is one of 2,381 physician assistants in California
Medical is Mary Surdilla's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Mary Surdilla is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Mary Surdilla is licensed in California.
Specialties and state licenses
- Medical physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists acute sinusitis, acute skin infection, contact dermatitis, fibromyalgia and chronic pain, joint pain, lower back pain, rash and tinnitus among the conditions Mary Surdilla treats.
Physician assistants near Mary Surdilla
Counts of 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
Mary D. Surdilla billed Medicare for 152 services in 2024
CMS data shows 152 Medicare services from Mary Surdilla across 4 procedure codes in 2024, all of them office visits, for 131 Medicare patients. Medicare paid $11,939 for them. Every service was in an office.
Mary Surdilla compared with the California median for physician assistants, 2024
- Mary Surdilla
- California median
- Medicare services
- 152vs 27845% below
- Medicare patients
- 131vs 11613% above
- Part D claims
- 69vs 44084% below
Medians across 1,473 physician assistants in California with Dmand AI profiles that report each measure.
Mary Surdilla'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
Mary D. Surdilla treated 131 Medicare patients in 2024, average age 73
CMS counts 131 Medicare patients who saw Mary Surdilla in 2024. The largest group is 65 to 74, with 62 patients. 69% of them have high cholesterol, and 63% have high blood pressure. 15% are also on Medicaid. Their average risk score is 0.84, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mary Surdilla's median patient age at 47, with 65% women.
Mary Surdilla's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mary Surdilla's Medicare patients by sex, 2024
- Women8666%
- Men4534%
Chronic conditions among Mary Surdilla's Medicare patients, 2024
- High cholesterol69%
- High blood pressure63%
- Arthritis50%
- Diabetes28%
- Osteoporosis24%
- Ischemic heart disease21%
- Anxiety18%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Mary Surdilla's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women65%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary D. Surdilla wrote 209 Medicare Part D claims in 2024
In 2024, Mary Surdilla wrote 209 Medicare Part D claims for 105 patients. 87% of them were for generic drugs. CMS names the drug for 69 of them, across 5 drugs with 11 or more claims each, at $1,510 in total drug cost.
Mary Surdilla's Part D claims by kind of drug, 2024
- Generic182 claims87%
- Brand-name and other27 claims13%
Mary Surdilla'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 Mary Surdilla's Part D claims, 2024
- Antibiotics17%35 of 209 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
Mary D. Surdilla offers telehealth to Medicare patients
Mary Surdilla accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Mary Surdilla as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mary D. Surdilla received $53 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Mary Surdilla from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Dexcom, Inc. paid the most, $30.
General payments to Mary Surdilla by program year, 2024 to 2025
Companies that paid Mary Surdilla the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mary D. Surdilla is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Mary D. Surdilla'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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 Mary D. Surdilla
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary D. Surdilla's NPI number?
Mary D. Surdilla's NPI number is 1407197437. It was assigned on March 15, 2013, and it is active in the NPI Registry.
What does Mary D. Surdilla specialize in?
Mary D. Surdilla is a physician assistant in Los Altos, California. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Mary D. Surdilla practice?
Mary Surdilla practices at 325 Distel Cir, Los Altos, CA 94022. Mary Surdilla's primary practice is Surgery Center Fremont in Los Altos, California. Dmand AI also links Mary Surdilla to 1 group practice or clinic.
What is Mary D. Surdilla's office phone number?
The practice phone on file for Mary Surdilla is (650) 498-3600.
What is Mary D. Surdilla's medical license number?
Mary Surdilla holds California license PA 15975.
What medical group is Mary D. Surdilla part of?
Mary Surdilla is linked to Palo Alto Foundation Medical Group.
Does Mary D. Surdilla accept Medicare?
Yes. CMS data shows Mary Surdilla billed Medicare for 152 services in 2024, and Mary Surdilla accepts Medicare assignment.
Does Mary D. Surdilla offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Mary Surdilla as offering telehealth services.
How many Medicare patients does Mary D. Surdilla see?
CMS counts 131 Medicare patients who saw Mary Surdilla in 2024, with an average age of 73.
Is Mary D. Surdilla board certified?
Yes. Mary Surdilla is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 4 more questionsShow fewer questions
What services does Mary D. Surdilla bill to Medicare?
In 2024, Mary Surdilla's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99203).
What drugs does Mary D. Surdilla prescribe most?
In 2024 Medicare Part D data, Mary Surdilla's most prescribed drugs by claims were Omeprazole, Triamcinolone Acetonide and Hydrochlorothiazide.
Has Mary D. Surdilla received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Mary Surdilla from 2 companies from 2024 to 2025. The largest total came from Dexcom, Inc.
How long has Mary D. Surdilla been practicing?
Mary Surdilla graduated from medical school in 2001, 25 years ago.
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