Dr. David A. Knowlton, MD
- Medicare services, 2024
- 509
- Medicare patients, 2024
- 135
- Part D claims, 2024
- 6,643
- Hospital affiliations
- 1
- Industry payments
- $266
- Practice address
- 1435 G St, Springfield, OR 97477
- Practice phone
- Call (541) 735-9420
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
G Street Integrated Health
Urgent Care Center · Springfield, Oregon
Find Dr. Knowlton's 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.
Dr. David A. Knowlton is a family medicine physician in Springfield, Oregon
Dr. Knowlton practices at G Street Integrated Health in Springfield, Oregon.
Dr. Knowlton's NPI, 1902975741, was assigned on November 7, 2006. Dr. Knowlton holds Oregon license MD20529.
- NPI
- 1902975741NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557346517
- NPI enumeration date
- November 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (541) 735-9420
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David A. Knowlton practices at G Street Integrated Health in Springfield, Oregon
Dr. Knowlton's primary practice is G Street Integrated Health, at 1435 G St, Springfield, OR 97477. The practice phone is (541) 735-9420.
- G Street Integrated Health1435 G St, Springfield, OR 97477Phone(541) 735-9420
Source: Dmand AI Affiliation Data
Dr. David A. Knowlton is affiliated with 3 sites of care and 1 medical group
Dr. Knowlton's primary practice is G Street Integrated Health in Springfield, Oregon. Dr. Knowlton is also affiliated with PeaceHealth Sacred Heart Medical Center RiverBend. The medical group on file is G Street Integrated Health. Dmand AI also links Dr. Knowlton to 1 more group practice or clinic, named with a free account. Dr. Knowlton's employer is on file too: an urgent care center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David A. Knowlton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowlton practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| G Street Integrated Health | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David A. Knowlton is one of 2,398 family medicine physicians in Oregon
Family medicine is Dr. Knowlton's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Knowlton is licensed in Oregon.
Specialties and state licenses
- Family medicine, OregonPrimary
Family medicine physicians near Dr. Knowlton
Counts of family 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. David A. Knowlton billed Medicare for 509 services in 2024
CMS data shows 509 Medicare services from Dr. Knowlton across 9 procedure codes in 2024, for 135 Medicare patients. Medicare paid $40,678 for them. Every service was in an office.
Dr. Knowlton's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2772024: 2936%
- Other services
- 2023: 692024: 13190%
- Tests and treatments
- 2023: 02024: 55
- Lab and pathology
- 2023: 02024: 30
Dr. Knowlton compared with the Oregon median for family medicine physicians, 2024
- Dr. Knowlton
- Oregon median
- Medicare services
- 509vs 2062.5 times
- Medicare patients
- 135vs 9936% above
- Part D claims
- 5,825vs 7817.5 times
Medians across 2,515 family medicine physicians in Oregon with Dmand AI profiles that report each measure.
Dr. Knowlton'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knowlton and other family medicine physicians in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David A. Knowlton treated 135 Medicare patients in 2024, average age 70
CMS counts 135 Medicare patients who saw Dr. Knowlton in 2024. The largest group is 65 to 74, with 64 patients. 65% of them have high blood pressure, and 61% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knowlton's median patient age at 51, with 46% women.
Dr. Knowlton's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Knowlton's Medicare patients by sex, 2024
- Women6447%
- Men7153%
Chronic conditions among Dr. Knowlton's Medicare patients, 2024
- High blood pressure65%
- High cholesterol61%
- Arthritis39%
- Anxiety32%
- Diabetes27%
- Mood disorders21%
- Asthma20%
- Chronic kidney disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knowlton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David A. Knowlton wrote 6,643 Medicare Part D claims in 2024
In 2024, Dr. Knowlton wrote 6,643 Medicare Part D claims for 366 patients. 90% of them were for generic drugs. CMS names the drug for 5,825 of them, across 118 drugs with 11 or more claims each, at $339,326 in total drug cost. In 2023, CMS named 5,835 claims across 122 drugs.
Dr. Knowlton's Part D claims by kind of drug, 2024
- Generic5,993 claims90%
- Brand-name625 claims9%
- Other25 claims0%
Dr. Knowlton'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 Dr. Knowlton's Part D claims, 2024
- Opioids9%574 of 6,643 claims
- Antibiotics1%96 of 6,643 claims
- Antipsychotics, patients 65 and over1%47 of 6,643 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: 5,8352024: 5,825No change
Drugs named by CMS: 118 in 2024, 122 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. David A. Knowlton offers telehealth to Medicare patients
Dr. Knowlton accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Knowlton as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David A. Knowlton received $266 in industry payments from 2022 to 2025
CMS Open Payments shows 14 general payments to Dr. Knowlton from 7 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $149.
General payments to Dr. Knowlton by program year, 2022 to 2025
Companies that paid Dr. Knowlton the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David A. Knowlton'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) |
| 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. David A. Knowlton
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. David A. Knowlton's NPI number?
Dr. David A. Knowlton's NPI number is 1902975741. It was assigned on November 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David A. Knowlton?
Dr. David A. Knowlton is a family medicine physician in Springfield, Oregon. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. David A. Knowlton practice?
Dr. Knowlton practices at 1435 G St, Springfield, OR 97477. Dr. Knowlton's primary practice is G Street Integrated Health in Springfield, Oregon. Dmand AI also links Dr. Knowlton to 1 group practice or clinic.
What is Dr. David A. Knowlton's office phone number?
The practice phone on file for Dr. Knowlton is (541) 735-9420.
What is Dr. David A. Knowlton's medical license number?
Dr. Knowlton holds Oregon license MD20529.
Which hospitals is Dr. David A. Knowlton affiliated with?
Dr. Knowlton is affiliated with PeaceHealth Sacred Heart Medical Center RiverBend.
What medical group is Dr. David A. Knowlton part of?
Dr. Knowlton is linked to G Street Integrated Health.
Does Dr. David A. Knowlton accept Medicare?
Yes. CMS data shows Dr. Knowlton billed Medicare for 509 services in 2024, and Dr. Knowlton accepts Medicare assignment.
Does Dr. David A. Knowlton offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Knowlton as offering telehealth services.
How many Medicare patients does Dr. David A. Knowlton see?
CMS counts 135 Medicare patients who saw Dr. Knowlton in 2024, with an average age of 70.
Show 4 more questionsShow fewer questions
What services does Dr. David A. Knowlton bill to Medicare?
In 2024, Dr. Knowlton's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99215).
What drugs does Dr. David A. Knowlton prescribe most?
In 2024 Medicare Part D data, Dr. Knowlton's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. David A. Knowlton received payments from drug or device companies?
CMS Open Payments shows $266 in general payments to Dr. Knowlton from 7 companies from 2022 to 2025. The largest total came from Abbvie Inc.
How long has Dr. David A. Knowlton been practicing?
Dr. Knowlton graduated from medical school in 1990, 36 years ago.
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