Marianna Koss, PA
- Medicare services, 2024
- 159
- Medicare patients, 2024
- 83
- Part D claims, 2024
- 129
- Industry payments
- $1,822
- Affiliated sites
- 1
- Practice address
- 3209 Coney Island Ave, Brooklyn, NY 11235
- Practice phone
- Call (718) 283-8700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Maimonides Faculty Practice Plan
Brooklyn, New York
Find Marianna Koss' 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.
Marianna Koss is a physician assistant in Brooklyn, New York
Marianna Koss practices at Maimonides Faculty Practice Plan in Brooklyn, New York.
Marianna Koss' NPI, 1902993561, was assigned on October 6, 2006. Marianna Koss holds New York license 006256-1.
- NPI
- 1902993561NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315049442
- NPI enumeration date
- October 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (718) 283-8700
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Marianna Koss practices at Maimonides Faculty Practice Plan in Brooklyn, New York
Marianna Koss' primary practice is Maimonides Faculty Practice Plan, at 3209 Coney Island Ave, Brooklyn, NY 11235 in Kings County. The practice phone is (718) 283-8700.
- Maimonides Faculty Practice Plan3209 Coney Island Ave, Brooklyn, NY 11235 · Kings CountyPhone(718) 283-8700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Marianna Koss is affiliated with 2 sites of care and 1 medical group
Marianna Koss' primary practice is Maimonides Faculty Practice Plan in Brooklyn, New York. The medical group on file is Maimonides Medical Center. Dmand AI also links Marianna Koss 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 Marianna Koss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marianna Koss practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Maimonides Faculty Practice Plan | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Marianna Koss is one of 2,670 physician assistants in New York
Medical is Marianna Koss' primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Marianna Koss is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Marianna Koss is licensed in New York.
Specialties and state licenses
- Medical physician assistant, New YorkPrimary
Physician assistants near Marianna Koss
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
Marianna Koss billed Medicare for 159 services in 2024
CMS data shows 159 Medicare services from Marianna Koss across 4 procedure codes in 2024, for 83 Medicare patients. Medicare paid $6,836 for them. Every service was in an office.
Marianna Koss' Medicare services by type, 2024
- Office and hospital visits65
- Tests and treatments48
- Surgery46
Marianna Koss compared with the New York median for physician assistants, 2024
- Marianna Koss
- New York median
- Medicare services
- 159vs 19418% below
- Medicare patients
- 83vs 886% below
- Part D claims
- 38vs 47392% below
Medians across 1,670 physician assistants in New York with Dmand AI profiles that report each measure.
Marianna Koss' 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
Marianna Koss treated 83 Medicare patients in 2024, average age 81
CMS counts 83 Medicare patients who saw Marianna Koss in 2024. The largest group is 75 to 84, with 35 patients. 75% of them have arthritis, and 75% have diabetes. Their average risk score is 2.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Marianna Koss' median patient age at 70, with 68% women.
Marianna Koss' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Marianna Koss' Medicare patients by sex, 2024
- Women5465%
- Men2935%
Chronic conditions among Marianna Koss' Medicare patients, 2024
- Arthritis75%
- Diabetes75%
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Mood disorders49%
- Atrial fibrillation48%
Share of Medicare patients with each condition. A patient can have several.
Marianna Koss' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women68%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marianna Koss wrote 129 Medicare Part D claims in 2024
In 2024, Marianna Koss wrote 129 Medicare Part D claims for 37 patients. 71% of them were for generic drugs. CMS names the drug for 38 of them, across 2 drugs with 11 or more claims each, at $10,287 in total drug cost.
Marianna Koss' Part D claims by kind of drug, 2024
- Generic92 claims71%
- Brand-name37 claims29%
Marianna Koss' 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.
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 Marianna Koss takes part in Medicare
Marianna Koss 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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Marianna Koss received $1,822 in industry payments in 2025
CMS Open Payments shows 59 general payments to Marianna Koss from 16 drug and device companies in 2025. Food and beverage make up the largest share, 95% of the total. Verona Pharma, Inc. paid the most, $291.
General payments to Marianna Koss by kind, 2025 to 2025
- Food and beverage$1,72295%
- Education$1005%
Companies that paid Marianna Koss the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Marianna Koss is board certified in certified physician assistant
Marianna Koss is a member of AAPA.
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Marianna Koss'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 Marianna Koss
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marianna Koss' NPI number?
Marianna Koss' NPI number is 1902993561. It was assigned on October 6, 2006, and it is active in the NPI Registry.
What does Marianna Koss specialize in?
Marianna Koss is a physician assistant in Brooklyn, New York. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Marianna Koss practice?
Marianna Koss practices at 3209 Coney Island Ave, Brooklyn, NY 11235. Marianna Koss' primary practice is Maimonides Faculty Practice Plan in Brooklyn, New York. Dmand AI also links Marianna Koss to 1 group practice or clinic.
What is Marianna Koss' office phone number?
The practice phone on file for Marianna Koss is (718) 283-8700.
What is Marianna Koss' medical license number?
Marianna Koss holds New York license 006256-1.
What medical group is Marianna Koss part of?
Marianna Koss is linked to Maimonides Medical Center.
Does Marianna Koss accept Medicare?
Yes. CMS data shows Marianna Koss billed Medicare for 159 services in 2024, and Marianna Koss accepts Medicare assignment.
How many Medicare patients does Marianna Koss see?
CMS counts 83 Medicare patients who saw Marianna Koss in 2024, with an average age of 81.
Is Marianna Koss board certified?
Yes. Marianna Koss is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Marianna Koss bill to Medicare?
In 2024, Marianna Koss' most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and surgery: heart and blood vessels (36415).
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What drugs does Marianna Koss prescribe most?
In 2024 Medicare Part D data, Marianna Koss' most prescribed drugs by claims were Metoprolol Succinate and Eliquis.
Has Marianna Koss received payments from drug or device companies?
CMS Open Payments shows $1,822 in general payments to Marianna Koss from 16 companies from 2025 to 2025. The largest total came from Verona Pharma, Inc.
How long has Marianna Koss been practicing?
Marianna Koss graduated from medical school in 1997, 29 years ago.
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