Dr. Melissa Rose Nyendak, MD
- Medicare services, 2017
- 159
- Part D claims, 2018
- 208
- Publications
- 19
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 619 Nw 6th Ave, Ste 500, Portland, OR 97209
- Practice phone
- Call (503) 988-5022
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
HIV Health Services Center
FQHC - Main Site · Portland, Oregon
Find Dr. Nyendak's professional email, personal email and mobile number
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Dr. Melissa Rose Nyendak is an infectious disease specialist in Portland, Oregon
Dr. Nyendak practices at HIV Health Services Center in Portland, Oregon.
Dr. Nyendak's NPI, 1851506299, was assigned on May 11, 2007. Dr. Nyendak holds Oregon license MD25919.
- NPI
- 1851506299NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678582814
- NPI enumeration date
- May 11, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 988-5022
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Melissa Rose Nyendak practices at HIV Health Services Center in Portland, Oregon
Dr. Nyendak's primary practice is HIV Health Services Center, at 619 Nw 6th Ave, Ste 500, Portland, OR 97209. The practice phone is (503) 988-5022.
- HIV Health Services Center619 Nw 6th Ave, Ste 500, Portland, OR 97209Phone(503) 988-5022
Source: Dmand AI Affiliation Data
Dr. Melissa Rose Nyendak is affiliated with 1 site of care and 1 medical group
Dr. Nyendak's primary practice is HIV Health Services Center in Portland, Oregon. The medical group on file is Multnomah County Health Department.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Melissa Rose Nyendak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nyendak practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HIV Health Services Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Melissa Rose Nyendak is one of 101 infectious disease specialists in Oregon
Infectious disease is Dr. Nyendak's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Nyendak is licensed in Oregon.
Specialties and state licenses
- Infectious disease, OregonPrimary
Infectious disease specialists near Dr. Nyendak
Counts of infectious disease specialists 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. Melissa Rose Nyendak billed Medicare for 159 services in 2017
CMS data shows 159 Medicare services from Dr. Nyendak across 7 procedure codes in 2017. Medicare paid $12,531 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nyendak's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 1272017: 15925%
Dr. Nyendak compared with the Oregon median for infectious disease specialists, 2017
- Dr. Nyendak
- Oregon median
- Medicare services
- 159vs 155Close to median
- Part D claims
- 208vs 11975% above
Medians across 103 infectious disease specialists in Oregon with Dmand AI profiles that report each measure.
Dr. Nyendak's most billed Medicare procedure codes, 2017
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. Nyendak and other infectious disease specialists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Melissa Rose Nyendak's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Nyendak's median patient age at 41, with 13% women.
Dr. Nyendak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women13%
- Men88%
Source: Dmand AI Patient Panel Data
Dr. Melissa Rose Nyendak wrote 208 Medicare Part D claims in 2018
In 2018, Dr. Nyendak wrote 208 Medicare Part D claims. They cover 10 drugs, with $365,595 in total drug cost. In 2017, CMS named 1,059 claims across 36 drugs.
Dr. Nyendak's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 1,0592018: 20880%
Drugs named by CMS: 10 in 2018, 36 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Melissa Rose Nyendak takes part in Medicare
Dr. Nyendak 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. Melissa Rose Nyendak has 19 publications on record
Dmand AI links 19 papers to Dr. Nyendak, published from 2011 to 2025. 2023 was the busiest year, with 3. The most frequent topics are India, HIV Infections and CD8-Positive T-Lymphocytes. Dr. Nyendak has published most often in MMWR Morb Mortal Wkly Rep. Dr. Nyendak's most frequent co-authors are Vijay V. Yeldandi, MD, Deborah Anne Lewinsohn, MD and Christina L. Lancioni, MD.
Dr. Nyendak's papers by year, 2013 to 2025
Topics Dr. Nyendak writes about most
- India
- HIV Infections
- CD8-Positive T-Lymphocytes
- Mycobacterium tuberculosis
- Antitubercular Agents
- CD4 Lymphocyte Count
- Tuberculosis
- Tuberculosis, Pulmonary
Dr. Nyendak's most frequent co-authors
- Vijay V. Yeldandi, MD8 shared papers
- Deborah Anne Lewinsohn, MD6 shared papers
- Christina L. Lancioni, MD3 shared papers
Recent publications by Dr. Nyendak
BMC Health Serv Res
See who Dr. Nyendak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nyendak works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Melissa Rose Nyendak'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Melissa Rose Nyendak
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What is Dr. Melissa Rose Nyendak's NPI number?
Dr. Melissa Rose Nyendak's NPI number is 1851506299. It was assigned on May 11, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Melissa Rose Nyendak?
Dr. Melissa Rose Nyendak is an infectious disease specialist in Portland, Oregon. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Melissa Rose Nyendak practice?
Dr. Nyendak practices at 619 Nw 6th Ave, Ste 500, Portland, OR 97209. Dr. Nyendak's primary practice is HIV Health Services Center in Portland, Oregon.
What is Dr. Melissa Rose Nyendak's office phone number?
The practice phone on file for Dr. Nyendak is (503) 988-5022.
What is Dr. Melissa Rose Nyendak's medical license number?
Dr. Nyendak holds Oregon license MD25919.
What medical group is Dr. Melissa Rose Nyendak part of?
Dr. Nyendak is linked to Multnomah County Health Department.
Does Dr. Melissa Rose Nyendak accept Medicare?
Yes. CMS data shows Dr. Nyendak billed Medicare for 159 services in 2017, and Dr. Nyendak accepts Medicare assignment.
What services does Dr. Melissa Rose Nyendak bill to Medicare?
In 2017, Dr. Nyendak's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and office visit, established patient (99214).
What drugs does Dr. Melissa Rose Nyendak prescribe most?
In 2018 Medicare Part D data, Dr. Nyendak's most prescribed drugs by claims were Isentress, Tivicay and Descovy.
How long has Dr. Melissa Rose Nyendak been practicing?
Dr. Nyendak graduated from medical school in 2002, 24 years ago.
Does Dr. Melissa Rose Nyendak do research?
Dmand AI links 19 publications to Dr. Nyendak, published from 2011 to 2025.
Who does Dr. Melissa Rose Nyendak publish with?
Dr. Nyendak's most frequent co-authors are Vijay V. Yeldandi, MD (8 shared papers), Deborah Anne Lewinsohn, MD (6 shared papers) and Christina L. Lancioni, MD (3 shared papers).
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