Dr. Maryann Diaz Pagulayan-Sy, MD
- Medicare services, 2024
- 687
- Medicare patients, 2024
- 95
- Part D claims, 2024
- 2,868
- Hospital affiliations
- 2
- Industry payments
- $2,007
- Practice address
- 465 W Putnam Ave, Porterville, CA 93257
- Practice phone
- Call (559) 784-1110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Pagulayan-Sy'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.
Dr. Maryann Diaz Pagulayan-Sy is an internist in Porterville, California
Dr. Pagulayan-Sy practices at Sierra View Medical Center in Porterville, California, part of Sierra View Medical Center.
Dr. Pagulayan-Sy's NPI, 1700961364, was assigned on October 25, 2006. Dr. Pagulayan-Sy graduated from University of Santo Tomas in 1990. Dr. Pagulayan-Sy's California license number on file is A56170.
- NPI
- 1700961364NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052336492
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (559) 784-1110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maryann Diaz Pagulayan-Sy practices at Sierra View Medical Center in Porterville, California
Dr. Pagulayan-Sy's primary practice is Sierra View Medical Center, at 465 W Putnam Ave, Porterville, CA 93257 in Tulare County. The practice phone is (559) 784-1110.
- Sierra View Medical Center465 W Putnam Ave, Porterville, CA 93257 · Tulare CountyPhone(559) 784-1110
Source: Dmand AI Affiliation Data
Dr. Maryann Diaz Pagulayan-Sy is affiliated with 3 sites of care and 1 medical group
Dr. Pagulayan-Sy's primary practice is Sierra View Medical Center in Porterville, California, part of Sierra View Medical Center. Dr. Pagulayan-Sy is also affiliated with Kaweah Health Medical Center. The medical group on file is PRO~PT Physical Therapy. Dmand AI also links Dr. Pagulayan-Sy to 1 more home health agency, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maryann Diaz Pagulayan-Sy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pagulayan-Sy practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sierra View Medical Center | Available with a free account |
| +2 more affiliated sites | 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 Sierra View Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Maryann Diaz Pagulayan-Sy is one of 16,751 internists in California
Internal medicine is Dr. Pagulayan-Sy's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Pagulayan-Sy has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute gastroduodenitis, acute sinusitis, acute skin infection, adjustment disease, aneurysm, anxiety, arthritis and atrial fibrillation and flutter among the conditions Dr. Pagulayan-Sy treats.
Internists near Dr. Pagulayan-Sy
Counts of internists 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. Maryann Diaz Pagulayan-Sy billed Medicare for 687 services in 2024
CMS data shows 687 Medicare services from Dr. Pagulayan-Sy across 1 procedure code in 2024, all of them office visits, for 95 Medicare patients. Medicare paid $43,446 for them. Every service was in an office.
Dr. Pagulayan-Sy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8152024: 68716%
Dr. Pagulayan-Sy compared with the California median for internists, 2024
- Dr. Pagulayan-Sy
- California median
- Medicare services
- 687vs 36190% above
- Medicare patients
- 95vs 15137% below
- Part D claims
- 2,422vs 4215.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Pagulayan-Sy'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 Dr. Pagulayan-Sy and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maryann Diaz Pagulayan-Sy treated 95 Medicare patients in 2024, average age 76
CMS counts 95 Medicare patients who saw Dr. Pagulayan-Sy in 2024. The largest group is 65 to 74, with 40 patients. 75% of them have high blood pressure, and 56% have high cholesterol. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Pagulayan-Sy's median patient age at 65, with 86% women.
Dr. Pagulayan-Sy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Pagulayan-Sy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol56%
- Arthritis55%
- Ischemic heart disease41%
- Diabetes34%
- Stroke or TIA14%
- Atrial fibrillation13%
- Depression13%
Share of Medicare patients with each condition. A patient can have several.
Dr. Pagulayan-Sy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women86%
- Men14%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maryann Diaz Pagulayan-Sy wrote 2,868 Medicare Part D claims in 2024
In 2024, Dr. Pagulayan-Sy wrote 2,868 Medicare Part D claims for 144 patients. 90% of them were for generic drugs. CMS names the drug for 2,422 of them, across 72 drugs with 11 or more claims each, at $155,769 in total drug cost. In 2023, CMS named 2,463 claims across 74 drugs.
Dr. Pagulayan-Sy's Part D claims by kind of drug, 2024
- Generic2,592 claims90%
- Brand-name263 claims9%
- Other13 claims0%
Dr. Pagulayan-Sy'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. Pagulayan-Sy's Part D claims, 2024
- Opioids7%214 of 2,868 claims
- Antibiotics7%190 of 2,868 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: 2,4632024: 2,4222%
Drugs named by CMS: 72 in 2024, 74 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. Maryann Diaz Pagulayan-Sy offers telehealth to Medicare patients
Dr. Pagulayan-Sy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Pagulayan-Sy as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Maryann Diaz Pagulayan-Sy received $2,007 in industry payments from 2016 to 2024
CMS Open Payments shows 137 general payments to Dr. Pagulayan-Sy from 15 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $553.
General payments to Dr. Pagulayan-Sy by program year, 2016 to 2024
Companies that paid Dr. Pagulayan-Sy 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. Maryann Diaz Pagulayan-Sy graduated from University of Santo Tomas
Dr. Pagulayan-Sy graduated from University of Santo Tomas in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Maryann Diaz Pagulayan-Sy accepts plans from 11 insurance carriers
Dr. Pagulayan-Sy is in network with 11 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
- Aetna
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Pagulayan-Sy accepts, by number of carriers
- PPO7
- Medicare6
- HMO4
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Maryann Diaz Pagulayan-Sy'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) |
| 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. Maryann Diaz Pagulayan-Sy
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. Maryann Diaz Pagulayan-Sy's NPI number?
Dr. Maryann Diaz Pagulayan-Sy's NPI number is 1700961364. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Maryann Diaz Pagulayan-Sy?
Dr. Maryann Diaz Pagulayan-Sy is an internist in Porterville, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Maryann Diaz Pagulayan-Sy practice?
Dr. Pagulayan-Sy practices at 465 W Putnam Ave, Porterville, CA 93257. Dr. Pagulayan-Sy's primary practice is Sierra View Medical Center in Porterville, California, part of Sierra View Medical Center. Dmand AI also links Dr. Pagulayan-Sy to 1 home health agency.
What is Dr. Maryann Diaz Pagulayan-Sy's office phone number?
The practice phone on file for Dr. Pagulayan-Sy is (559) 784-1110.
What is Dr. Maryann Diaz Pagulayan-Sy's medical license number?
Dr. Pagulayan-Sy's California license number on file is A56170.
Which hospitals is Dr. Maryann Diaz Pagulayan-Sy affiliated with?
Dr. Pagulayan-Sy practices at Sierra View Medical Center in Porterville, California. Dr. Pagulayan-Sy is also affiliated with Kaweah Health Medical Center.
What medical group is Dr. Maryann Diaz Pagulayan-Sy part of?
Dr. Pagulayan-Sy is linked to PRO~PT Physical Therapy.
Does Dr. Maryann Diaz Pagulayan-Sy accept Medicare?
Yes. CMS data shows Dr. Pagulayan-Sy billed Medicare for 687 services in 2024, and Dr. Pagulayan-Sy accepts Medicare assignment.
Does Dr. Maryann Diaz Pagulayan-Sy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Pagulayan-Sy as offering telehealth services.
How many Medicare patients does Dr. Maryann Diaz Pagulayan-Sy see?
CMS counts 95 Medicare patients who saw Dr. Pagulayan-Sy in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
What services does Dr. Maryann Diaz Pagulayan-Sy bill to Medicare?
In 2024, Dr. Pagulayan-Sy's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Maryann Diaz Pagulayan-Sy go to medical school?
Dr. Pagulayan-Sy graduated from University of Santo Tomas in 1990.
What drugs does Dr. Maryann Diaz Pagulayan-Sy prescribe most?
In 2024 Medicare Part D data, Dr. Pagulayan-Sy's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Maryann Diaz Pagulayan-Sy received payments from drug or device companies?
CMS Open Payments shows $2,007 in general payments to Dr. Pagulayan-Sy from 15 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Maryann Diaz Pagulayan-Sy been practicing?
Dr. Pagulayan-Sy graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Maryann Diaz Pagulayan-Sy accept?
Dr. Pagulayan-Sy is in network with 11 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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