HypotensionVascular Diseases
Dr. Ryan S. Griffiths, MD
NPI1851516447PAC ID9133257942
- Medicare services, 2024
- 995
- Medicare patients, 2024
- 368
- Part D claims, 2024
- 4,738
- Publications
- 1
- Clinical trials
- 1
- Practice address
- 1130 Nw 22nd Ave, Portland, OR 97210
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ngc Endoscopy Services, LLC - HOPD
Acute Care Hospital outpatient department · Portland, Oregon
Find Dr. Griffiths' professional email, personal email and mobile number
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Dr. Ryan S. Griffiths is a nephrologist in Portland, Oregon
Dr. Griffiths practices at Ngc Endoscopy Services, LLC - HOPD in Portland, Oregon.
Dr. Griffiths' NPI, 1851516447, was assigned on April 17, 2007. Dr. Griffiths graduated from Oregon Health Sciences University School of Medicine in 2005. Dr. Griffiths holds Oregon license MD28045.
NPI and contact details
- NPI
- 1851516447NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133257942
- NPI enumeration date
- April 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan S. Griffiths practices at Ngc Endoscopy Services, LLC - HOPD in Portland, Oregon
Dr. Griffiths' primary practice is Ngc Endoscopy Services, LLC - HOPD, at 1130 Nw 22nd Ave, Portland, OR 97210.
- Ngc Endoscopy Services, LLC - HOPD1130 Nw 22nd Ave, Portland, OR 97210
Source: Dmand AI Affiliation Data
Dr. Ryan S. Griffiths is affiliated with 12 sites of care and 1 medical group
Dr. Griffiths' primary practice is Ngc Endoscopy Services, LLC - HOPD in Portland, Oregon. Dr. Griffiths is also affiliated with OHSU Hospital. The medical group on file is Northwest Renal Clinic. Dmand AI also links Dr. Griffiths to 4 more hospitals, 3 dialysis centers, 1 physician office, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.
Ngc Endoscopy Services, LLC - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ryan S. Griffiths' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Griffiths practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ngc Endoscopy Services, LLC - HOPD | Available with a free account |
| +11 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan S. Griffiths is one of 127 nephrologists in Oregon
Nephrology is Dr. Griffiths' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Griffiths is licensed in Oregon.
Specialties and state licenses
- Nephrology, OregonPrimary
Nephrologists near Dr. Griffiths
Counts of nephrologists 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. Ryan S. Griffiths billed Medicare for 995 services in 2024
CMS data shows 995 Medicare services from Dr. Griffiths across 12 procedure codes in 2024, for 368 Medicare patients. Medicare paid $154,381 for them.
Medicare services, 2024995
Medicare patients368
Paid by Medicare$154,381
Procedure codes12
Dr. Griffiths' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4492024: 49410%
- Office and hospital visits
- 2023: 5502024: 46116%
- Other services
- 2023: 02024: 40
Where Dr. Griffiths' Medicare services took place, 2024
- In an office78679%
- In a facility20921%
Dr. Griffiths compared with the Oregon median for nephrologists, 2024
- Dr. Griffiths
- Oregon median
- Medicare services
- 995vs 4902.0 times
- Medicare patients
- 368vs 20381% above
- Part D claims
- 4,339vs 9964.4 times
Medians across 130 nephrologists in Oregon with Dmand AI profiles that report each measure.
Dr. Griffiths' 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 Dr. Griffiths?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Griffiths and other nephrologists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan S. Griffiths treated 368 Medicare patients in 2024, average age 72
CMS counts 368 Medicare patients who saw Dr. Griffiths in 2024. The largest group is 65 to 74, with 132 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 28% are also on Medicaid. Their average risk score is 4.10, 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. Griffiths' median patient age at 72, with 49% women.
Medicare patients, 2024368
Average age72
Average risk score4.10
Also on Medicaid28%
Dr. Griffiths' Medicare patients by age, 2024
Dr. Griffiths' Medicare patients by sex, 2024
- Women18951%
- Men17949%
Chronic conditions among Dr. Griffiths' Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol66%
- Diabetes57%
- Heart failure47%
- Arthritis38%
- Ischemic heart disease37%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Griffiths' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan S. Griffiths wrote 4,738 Medicare Part D claims in 2024
In 2024, Dr. Griffiths wrote 4,738 Medicare Part D claims for 625 patients. 91% of them were for generic drugs. CMS names the drug for 4,339 of them, across 58 drugs with 11 or more claims each, at $330,191 in total drug cost. In 2023, CMS named 4,151 claims across 63 drugs.
Part D claims, 20244,738
Drugs named by CMS58
Total drug cost$330,191
Part D patients625
Dr. Griffiths' Part D claims by kind of drug, 2024
- Generic4,299 claims91%
- Brand-name and other439 claims9%
Dr. Griffiths' 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. Griffiths' Part D claims, 2024
- Opioids0%13 of 4,738 claims
- Antibiotics1%55 of 4,738 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: 4,1512024: 4,3395%
Drugs named by CMS: 58 in 2024, 63 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. Ryan S. Griffiths offers telehealth to Medicare patients
Dr. Griffiths accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Griffiths as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Dr. Ryan S. Griffiths has 1 publication on record
Dmand AI links 1 paper to Dr. Griffiths in 2012. Dr. Griffiths' most frequent co-author is Ian Denison Schnadig, MD.
Papers1
Dr. Griffiths' most frequent co-authors
Recent publications by Dr. Griffiths
See who Dr. Griffiths researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Griffiths works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan S. Griffiths has worked on 1 clinical trial
Dmand AI links Dr. Griffiths to 1 clinical trial. Conditions studied include Hypotension and Vascular Diseases.
Conditions in Dr. Griffiths' trials
- Hypotension
- Vascular Diseases
Recent clinical trials with Dr. Griffiths
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ryan S. Griffiths received $315 in industry payments from 2017 to 2025
CMS Open Payments shows 10 general payments to Dr. Griffiths from 7 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 99% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $118.
General payments to Dr. Griffiths by program year, 2017 to 2025
General payments to Dr. Griffiths by kind, 2017 to 2025
$315in total
- Food and beverage$31199%
- Education$41%
Companies that paid Dr. Griffiths the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan S. Griffiths graduated from Oregon Health Sciences University School of Medicine
Dr. Griffiths graduated from Oregon Health Sciences University School of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan S. Griffiths'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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 Dr. Ryan S. Griffiths
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. Ryan S. Griffiths' NPI number?
Dr. Ryan S. Griffiths' NPI number is 1851516447. It was assigned on April 17, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan S. Griffiths?
Dr. Ryan S. Griffiths is a nephrologist in Portland, Oregon. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Ryan S. Griffiths practice?
Dr. Griffiths practices at 1130 Nw 22nd Ave, Portland, OR 97210. Dr. Griffiths' primary practice is Ngc Endoscopy Services, LLC - HOPD in Portland, Oregon. Dmand AI also links Dr. Griffiths to 4 hospitals, 3 dialysis centers, 1 physician office, 1 group practice or clinic and 1 ambulatory surgery center.
What is Dr. Ryan S. Griffiths' medical license number?
Dr. Griffiths holds Oregon license MD28045.
Which hospitals is Dr. Ryan S. Griffiths affiliated with?
Dr. Griffiths is affiliated with OHSU Hospital. Dmand AI links Dr. Griffiths to 4 more hospitals.
What medical group is Dr. Ryan S. Griffiths part of?
Dr. Griffiths is linked to Northwest Renal Clinic.
Does Dr. Ryan S. Griffiths accept Medicare?
Yes. CMS data shows Dr. Griffiths billed Medicare for 995 services in 2024, and Dr. Griffiths accepts Medicare assignment.
Does Dr. Ryan S. Griffiths offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Griffiths as offering telehealth services.
How many Medicare patients does Dr. Ryan S. Griffiths see?
CMS counts 368 Medicare patients who saw Dr. Griffiths in 2024, with an average age of 72.
What services does Dr. Ryan S. Griffiths bill to Medicare?
In 2024, Dr. Griffiths' most billed Medicare services were dialysis (90960), office visit, established patient (99214) and dialysis (90961).
Show 6 more questionsShow fewer questions
Where did Dr. Ryan S. Griffiths go to medical school?
Dr. Griffiths graduated from Oregon Health Sciences University School of Medicine in 2005.
What drugs does Dr. Ryan S. Griffiths prescribe most?
In 2024 Medicare Part D data, Dr. Griffiths' most prescribed drugs by claims were Amlodipine Besylate, Furosemide and Potassium Chloride.
Has Dr. Ryan S. Griffiths received payments from drug or device companies?
CMS Open Payments shows $315 in general payments to Dr. Griffiths from 7 companies from 2017 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Ryan S. Griffiths been practicing?
Dr. Griffiths graduated from medical school in 2005, 21 years ago.
Does Dr. Ryan S. Griffiths do research?
Dmand AI links 1 publication to Dr. Griffiths. Dr. Griffiths has worked on 1 clinical trial.
Who does Dr. Ryan S. Griffiths publish with?
Dr. Griffiths' most frequent co-authors are Ian Denison Schnadig, MD (1 shared paper).
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