Mary Riker, PA
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 64
- Part D claims, 2024
- 66
- Hospital affiliations
- 1
- Industry payments
- $19
- Practice address
- 100 Port Washington Boulevard, Roslyn, NY 11576
- Practice phone
- Call (516) 562-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mary Riker's professional email, personal email and mobile number
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Mary Riker is a surgical physician assistant in Roslyn, New York
Mary Riker practices at St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre.
Mary Riker's NPI, 1265476758, was assigned on June 15, 2006. Mary Riker holds New York license 006574.
- NPI
- 1265476758NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931201829
- NPI enumeration date
- June 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 562-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Riker practices at St. Francis Hospital & Heart Center in Roslyn, New York
Mary Riker's primary practice is St. Francis Hospital & Heart Center, at 100 Port Washington Boulevard, Roslyn, NY 11576 in Nassau County. The practice phone is (516) 562-6000.
- St. Francis Hospital & Heart Center100 Port Washington Boulevard, Roslyn, NY 11576 · Nassau CountyPhone(516) 562-6000
Source: Dmand AI Affiliation Data
Mary Riker is affiliated with 1 site of care and 1 medical group
Mary Riker's primary practice is St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre. The medical group on file is Samaritan Emergency Medical Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mary Riker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Riker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Francis Hospital & Heart Center | 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 Diocese of Rockville Centre and 6.2K+ hospitals, with verified contacts in the same login.
Mary Riker is one of 1,635 surgical physician assistants in New York
Surgical is Mary Riker's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Mary Riker is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Mary Riker is licensed in New York.
Specialties and state licenses
- Surgical physician assistant, New YorkPrimary
Surgical physician assistants near Mary Riker
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
Mary Riker billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Mary Riker across 1 procedure code in 2024, for 64 Medicare patients. Medicare paid $972 for them. Every service was in a facility, such as a hospital, rather than an office.
Mary Riker compared with the New York median for surgical physician assistants, 2024
- Mary Riker
- New York median
- Medicare services
- 27vs 11777% below
- Medicare patients
- 64vs 5125% above
- Part D claims
- 27vs 11075% below
Medians across 1,072 surgical physician assistants in New York with Dmand AI profiles that report each measure.
Mary Riker'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.
Need commercial claims for Mary Riker?
Medicare shows one payer. Book a meeting to get commercial claims data for Mary Riker and other surgical physician assistants in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Mary Riker treated 64 Medicare patients in 2024, average age 79
CMS counts 64 Medicare patients who saw Mary Riker in 2024. The largest group is 75 to 84, with 26 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.69, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mary Riker's median patient age at 60, with 33% women.
Mary Riker's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mary Riker's Medicare patients by sex, 2024
- Women2742%
- Men3758%
Chronic conditions among Mary Riker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Ischemic heart disease56%
- Chronic kidney disease42%
- Atrial fibrillation41%
- Cancer38%
- Diabetes36%
Share of Medicare patients with each condition. A patient can have several.
Mary Riker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women33%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary Riker wrote 66 Medicare Part D claims in 2024
In 2024, Mary Riker wrote 66 Medicare Part D claims for 49 patients. 88% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $36 in total drug cost.
Mary Riker's Part D claims by kind of drug, 2024
- Generic58 claims88%
- Brand-name and other8 claims12%
Mary Riker'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 Riker's Part D claims, 2024
- Opioids47%31 of 66 claims
- Antibiotics21%14 of 66 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
How Mary Riker takes part in Medicare
Mary Riker 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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Mary Riker received $19 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Riker from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Cumberland Pharmaceuticals, Inc. paid the most, $19.
Companies that paid Mary Riker the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mary Riker is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Mary Riker'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 |
| 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 Riker
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 Riker's NPI number?
Mary Riker's NPI number is 1265476758. It was assigned on June 15, 2006, and it is active in the NPI Registry.
What does Mary Riker specialize in?
Mary Riker is a surgical physician assistant in Roslyn, New York. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Mary Riker practice?
Mary Riker practices at 100 Port Washington Boulevard, Roslyn, NY 11576. Mary Riker's primary practice is St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre.
What is Mary Riker's office phone number?
The practice phone on file for Mary Riker is (516) 562-6000.
What is Mary Riker's medical license number?
Mary Riker holds New York license 006574.
Which hospitals is Mary Riker affiliated with?
Mary Riker practices at St. Francis Hospital & Heart Center in Roslyn, New York.
What medical group is Mary Riker part of?
Mary Riker is linked to Samaritan Emergency Medical Services.
Does Mary Riker accept Medicare?
Yes. CMS data shows Mary Riker billed Medicare for 27 services in 2024, and Mary Riker accepts Medicare assignment.
How many Medicare patients does Mary Riker see?
CMS counts 64 Medicare patients who saw Mary Riker in 2024, with an average age of 79.
Is Mary Riker board certified?
Yes. Mary Riker 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 Riker bill to Medicare?
In 2024, Mary Riker's most billed Medicare services were hospital inpatient care (99231).
What drugs does Mary Riker prescribe most?
In 2024 Medicare Part D data, Mary Riker's most prescribed drugs by claims were Tramadol HCl and Oxycodone HCl.
Has Mary Riker received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Mary Riker from 1 company from 2025 to 2025. The largest total came from Cumberland Pharmaceuticals, Inc.
How long has Mary Riker been practicing?
Mary Riker graduated from medical school in 1997, 29 years ago.
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