Dr. Donald Erwin Klug, MD
- Medicare services, 2022
- 45
- Part D claims, 2024
- 332
- Industry payments
- $19
- Affiliated sites
- 3
- Medical groups
- 3
- Practice address
- 15230 Lakeshore Drive, Clearlake, CA 95422
- Practice phone
- Call (707) 994-0407
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventist Health Clear Lake - Clearlake
Rural Health Clinic - Hospital-Owned · Clearlake, California
Find Dr. Klug'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. Donald Erwin Klug is a nephrologist in Clearlake, California
Dr. Klug practices at Adventist Health Clear Lake - Clearlake in Clearlake, California.
Dr. Klug's NPI, 1811923568, was assigned on June 24, 2006. Dr. Klug graduated from University of Wisconsin-Madison in 1971. Dr. Klug's California license number on file is G26922.
- NPI
- 1811923568NPI Registry (opens in a new tab)
- NPI enumeration date
- June 24, 2006
- NPI status
- Active
- Practice phone
- (707) 994-0407
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 85
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Donald Erwin Klug practices at Adventist Health Clear Lake - Clearlake in Clearlake, California
Dr. Klug's primary practice is Adventist Health Clear Lake - Clearlake, at 15230 Lakeshore Drive, Clearlake, CA 95422. The practice phone is (707) 994-0407.
- Adventist Health Clear Lake - Clearlake15230 Lakeshore Drive, Clearlake, CA 95422Phone(707) 994-0407
Source: Dmand AI Affiliation Data
Dr. Donald Erwin Klug is affiliated with 3 sites of care and 3 medical groups
Dr. Klug's primary practice is Adventist Health Clear Lake - Clearlake in Clearlake, California. The medical group on file is Adventist Health Clear Lake. Dmand AI also links Dr. Klug to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Donald Erwin Klug's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klug practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Clear Lake - Clearlake | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Donald Erwin Klug is one of 1,401 nephrologists in California
Nephrology is Dr. Klug's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Klug is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Klug's licenses on file in 3 states: California, Georgia and Florida.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Georgia license
- Florida license
Clinical focus
Dmand AI lists acute kidney failure, acute mini-stroke (TIA), aneurysm, atrial fibrillation and flutter, chronic diabetes, chronic hypertension, contact dermatitis and coronary artery disease among the conditions Dr. Klug treats.
Nephrologists near Dr. Klug
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. Donald Erwin Klug billed Medicare for 45 services in 2022
CMS data shows 45 Medicare services from Dr. Klug across 2 procedure codes in 2022. Medicare paid $2,140 for them.
Dr. Klug's Medicare services by type, 2020 to 2022
- 2020
- 2022
- Office and hospital visits
- 2020: 3142022: 4586%
Where Dr. Klug's Medicare services took place, 2022
- In an office2044%
- In a facility2556%
Dr. Klug compared with the California median for nephrologists, 2022
- Dr. Klug
- California median
- Medicare services
- 45vs 1,08496% below
- Part D claims
- 125vs 95587% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Klug's most billed Medicare procedure codes, 2022
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. Klug?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klug and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Donald Erwin Klug's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Klug's median patient age at 77, with 56% women.
Dr. Klug's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Donald Erwin Klug wrote 332 Medicare Part D claims in 2024
In 2024, Dr. Klug wrote 332 Medicare Part D claims for 80 patients. 87% of them were for generic drugs. CMS names the drug for 125 of them, across 6 drugs with 11 or more claims each, at $784 in total drug cost. In 2023, CMS named 175 claims across 9 drugs.
Dr. Klug's Part D claims by kind of drug, 2024
- Generic290 claims87%
- Brand-name and other42 claims13%
Dr. Klug'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1752024: 12529%
Drugs named by CMS: 6 in 2024, 9 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Donald Erwin Klug received $19 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Klug from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $19.
Companies that paid Dr. Klug the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Donald Erwin Klug graduated from University of Wisconsin-Madison
Dr. Klug graduated from University of Wisconsin-Madison in 1971.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Donald Erwin Klug accepts plans from 14 insurance carriers
Dr. Klug is in network with 14 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Highmark
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Klug accepts, by number of carriers
- PPO10
- Medicare7
- HMO6
- POS5
- EPO4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Donald Erwin Klug'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)Medicare Part D Prescribers - by Provider (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Donald Erwin Klug
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. Donald Erwin Klug's NPI number?
Dr. Donald Erwin Klug's NPI number is 1811923568. It was assigned on June 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Donald Erwin Klug?
Dr. Donald Erwin Klug is a nephrologist in Clearlake, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Donald Erwin Klug practice?
Dr. Klug practices at 15230 Lakeshore Drive, Clearlake, CA 95422. Dr. Klug's primary practice is Adventist Health Clear Lake - Clearlake in Clearlake, California. Dmand AI also links Dr. Klug to 2 group practices and clinics and 2 medical groups.
What is Dr. Donald Erwin Klug's office phone number?
The practice phone on file for Dr. Klug is (707) 994-0407.
What is Dr. Donald Erwin Klug's medical license number?
Dr. Klug's California license number on file is G26922, one of the licenses on file in 3 states.
Which states has Dr. Donald Erwin Klug been licensed in?
Dmand AI has state licenses on file for Dr. Klug in California (1974 to 2025), Georgia (2022 to 2024) and Florida (2010 to 2020).
What medical group is Dr. Donald Erwin Klug part of?
Dr. Klug is linked to Adventist Health Clear Lake. Dmand AI links Dr. Klug to 2 more medical groups.
Does Dr. Donald Erwin Klug accept Medicare?
Yes. CMS data shows Dr. Klug billed Medicare for 45 services in 2022.
Is Dr. Donald Erwin Klug board certified?
Yes. Dr. Klug is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Donald Erwin Klug bill to Medicare?
In 2022, Dr. Klug's most billed Medicare services were hospital inpatient care (99232) and office visit, established patient (99212).
Show 5 more questionsShow fewer questions
Where did Dr. Donald Erwin Klug go to medical school?
Dr. Klug graduated from University of Wisconsin-Madison in 1971.
What drugs does Dr. Donald Erwin Klug prescribe most?
In 2024 Medicare Part D data, Dr. Klug's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Donald Erwin Klug received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Klug from 1 company from 2023 to 2023. The largest total came from Novo Nordisk Inc.
How long has Dr. Donald Erwin Klug been practicing?
Dr. Klug graduated from medical school in 1971, 55 years ago.
What insurance does Dr. Donald Erwin Klug accept?
Dr. Klug is in network with 14 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
Selling to nephrology practices?
See nephrologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card