Dr. Marissa C. Hahn, MD
- Medicare services, 2023
- 12
- Medicare patients, 2024
- 20
- Part D claims, 2024
- 24
- Hospital affiliations
- 1
- Medical groups
- 3
- Practice address
- 11511 Ne 10th Street, Bellevue, WA 98004
- Practice phone
- Call (425) 502-4048
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ambulatory Surgery Center at Bellevue Medical Center
Surgery Center - Medicare-Certified · Bellevue, Washington
Find Dr. Hahn's professional email, personal email and mobile number
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Dr. Marissa C. Hahn is an emergency medicine physician in Bellevue, Washington
Dr. Hahn practices at Ambulatory Surgery Center at Bellevue Medical Center in Bellevue, Washington.
Dr. Hahn's NPI, 1831518489, was assigned on April 10, 2014. Dr. Hahn graduated from University of Washington School of Medicine in 2014. Dr. Hahn holds Washington license 60757309.
- NPI
- 1831518489NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406177898
- NPI enumeration date
- April 10, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 502-4048
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marissa C. Hahn practices at Ambulatory Surgery Center at Bellevue Medical Center in Bellevue, Washington
Dr. Hahn's primary practice is Ambulatory Surgery Center at Bellevue Medical Center, at 11511 Ne 10th Street, Bellevue, WA 98004. The practice phone is (425) 502-4048.
- Ambulatory Surgery Center at Bellevue Medical Center11511 Ne 10th Street, Bellevue, WA 98004Phone(425) 502-4048
Source: Dmand AI Affiliation Data
Dr. Marissa C. Hahn is affiliated with 3 sites of care and 3 medical groups
Dr. Hahn's primary practice is Ambulatory Surgery Center at Bellevue Medical Center in Bellevue, Washington. Dr. Hahn is also affiliated with Swedish Issaquah Campus. The medical group on file is Washington Permanente Medical Group, P.C. Dmand AI also links Dr. Hahn to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marissa C. Hahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hahn practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ambulatory Surgery Center at Bellevue Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marissa C. Hahn is one of 1,408 emergency medicine physicians in Washington
Emergency medicine is Dr. Hahn's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Hahn is licensed in Washington.
Specialties and state licenses
- Emergency medicine, WashingtonPrimary
Emergency medicine physicians near Dr. Hahn
Counts of emergency medicine physicians 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. Marissa C. Hahn billed Medicare for 12 services in 2023
CMS data shows 12 Medicare services from Dr. Hahn across 1 procedure code in 2023, for 20 Medicare patients. Medicare paid $1,656 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hahn's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 752023: 1284%
- Tests and treatments
- 2022: 492023: 0100%
Dr. Hahn compared with the Washington median for emergency medicine physicians, 2023
- Dr. Hahn
- Washington median
- Medicare services
- 12vs 26896% below
- Medicare patients
- 20vs 22391% below
- Part D claims
- 31vs 6149% below
Medians across 1,440 emergency medicine physicians in Washington with Dmand AI profiles that report each measure.
Dr. Hahn's most billed Medicare procedure codes, 2023
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. Hahn and other emergency medicine physicians in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marissa C. Hahn treated 20 Medicare patients in 2024, average age 73
CMS counts 20 Medicare patients who saw Dr. Hahn in 2024. 55% of them have arthritis, and 55% have high blood pressure. Their average risk score is 2.24, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hahn's median patient age at 38, with 52% women.
Chronic conditions among Dr. Hahn's Medicare patients, 2024
- Arthritis55%
- High blood pressure55%
- High cholesterol55%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marissa C. Hahn wrote 24 Medicare Part D claims in 2024
In 2024, Dr. Hahn wrote 24 Medicare Part D claims for 15 patients. 100% of them were for generic drugs. They cover 2 drugs, with $179 in total drug cost. In 2020, CMS named 24 claims across 2 drugs.
Dr. Hahn's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 242021: 3129%
Drugs named by CMS: 2 in 2021, 2 in 2020.
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 Dr. Marissa C. Hahn takes part in Medicare
Dr. Hahn 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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Dr. Marissa C. Hahn graduated from University of Washington School of Medicine
Dr. Hahn graduated from University of Washington School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marissa C. Hahn'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 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) |
| 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 Dr. Marissa C. Hahn
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. Marissa C. Hahn's NPI number?
Dr. Marissa C. Hahn's NPI number is 1831518489. It was assigned on April 10, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Marissa C. Hahn?
Dr. Marissa C. Hahn is an emergency medicine physician in Bellevue, Washington. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Marissa C. Hahn practice?
Dr. Hahn practices at 11511 Ne 10th Street, Bellevue, WA 98004. Dr. Hahn's primary practice is Ambulatory Surgery Center at Bellevue Medical Center in Bellevue, Washington. Dmand AI also links Dr. Hahn to 2 medical groups and 1 group practice or clinic.
What is Dr. Marissa C. Hahn's office phone number?
The practice phone on file for Dr. Hahn is (425) 502-4048.
What is Dr. Marissa C. Hahn's medical license number?
Dr. Hahn holds Washington license 60757309.
Which hospitals is Dr. Marissa C. Hahn affiliated with?
Dr. Hahn is affiliated with Swedish Issaquah Campus.
What medical group is Dr. Marissa C. Hahn part of?
Dr. Hahn is linked to Washington Permanente Medical Group, P.C. Dmand AI links Dr. Hahn to 2 more medical groups.
Does Dr. Marissa C. Hahn accept Medicare?
Yes. CMS data shows Dr. Hahn billed Medicare for 12 services in 2023, and Dr. Hahn accepts Medicare assignment.
How many Medicare patients does Dr. Marissa C. Hahn see?
CMS counts 20 Medicare patients who saw Dr. Hahn in 2024, with an average age of 73.
What services does Dr. Marissa C. Hahn bill to Medicare?
In 2023, Dr. Hahn's most billed Medicare services were emergency department visit (99285).
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Where did Dr. Marissa C. Hahn go to medical school?
Dr. Hahn graduated from University of Washington School of Medicine in 2014.
What drugs does Dr. Marissa C. Hahn prescribe most?
In 2021 Medicare Part D data, Dr. Hahn's most prescribed drugs by claims were Ondansetron ODT and Hydrocodone-Acetaminophen.
How long has Dr. Marissa C. Hahn been practicing?
Dr. Hahn graduated from medical school in 2014, 12 years ago.
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