Dr. Amber L. Hertz-Tang, MD
- Medicare services, 2024
- 1,105
- Medicare patients, 2024
- 366
- Part D claims, 2024
- 1,563
- Hospital affiliations
- 5
- Industry payments
- $15
- Practice address
- 9155 SW Barnes Rd, Portland, OR 97225
- Practice phone
- Call (503) 229-7976
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwest Renal Clinic, Inc.
Portland, Oregon
Find Dr. Hertz-Tang'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. Amber L. Hertz-Tang is a nephrologist in Portland, Oregon
Dr. Hertz-Tang practices at Northwest Renal Clinic, Inc. in Portland, Oregon.
Dr. Hertz-Tang's NPI, 1750700076, was assigned on April 15, 2014. Dr. Hertz-Tang graduated from David Geffen School of Medicine at UCLA in 2022. Dr. Hertz-Tang's Oregon license number on file is MD201408.
- NPI
- 1750700076NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224332705
- NPI enumeration date
- April 15, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 229-7976
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Amber L. Hertz-Tang practices at Northwest Renal Clinic, Inc. in Portland, Oregon
Dr. Hertz-Tang's primary practice is Northwest Renal Clinic, Inc., at 9155 SW Barnes Rd, Portland, OR 97225 in Washington County. The practice phone is (503) 229-7976.
- Northwest Renal Clinic, Inc.9155 SW Barnes Rd, Portland, OR 97225 · Washington CountyPhone(503) 229-7976
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Amber L. Hertz-Tang is affiliated with 12 sites of care and 1 medical group
Dr. Hertz-Tang's primary practice is Northwest Renal Clinic, Inc. in Portland, Oregon. Dr. Hertz-Tang is also affiliated with OHSU Hospital. The medical group on file is Northwest Renal Clinic. Dmand AI also links Dr. Hertz-Tang to 4 more hospitals, 5 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Amber L. Hertz-Tang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hertz-Tang practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Renal Clinic, Inc. | 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. Amber L. Hertz-Tang is one of 127 nephrologists in Oregon
Nephrology is Dr. Hertz-Tang's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Hertz-Tang is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Hertz-Tang's licenses on file in 3 states: Oregon, Washington and Wisconsin.
Specialties and state licenses
- Nephrology, OregonPrimary
- Washington license
- Wisconsin license
Nephrologists near Dr. Hertz-Tang
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. Amber L. Hertz-Tang billed Medicare for 1,105 services in 2024
CMS data shows 1,105 Medicare services from Dr. Hertz-Tang across 13 procedure codes in 2024, for 366 Medicare patients. Medicare paid $112,951 for them.
Dr. Hertz-Tang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4812024: 53110%
- Tests and treatments
- 2023: 3662024: 3592%
- Other services
- 2023: 02024: 215
Where Dr. Hertz-Tang's Medicare services took place, 2024
- In an office67961%
- In a facility42639%
Dr. Hertz-Tang compared with the Oregon median for nephrologists, 2024
- Dr. Hertz-Tang
- Oregon median
- Medicare services
- 1,105vs 4902.3 times
- Medicare patients
- 366vs 20380% above
- Part D claims
- 1,289vs 99629% above
Medians across 130 nephrologists in Oregon with Dmand AI profiles that report each measure.
Dr. Hertz-Tang'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.
Need commercial claims for Dr. Hertz-Tang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hertz-Tang and other nephrologists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Amber L. Hertz-Tang treated 366 Medicare patients in 2024, average age 70
CMS counts 366 Medicare patients who saw Dr. Hertz-Tang in 2024. The largest group is 65 to 74, with 137 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 28% are also on Medicaid. Their average risk score is 4.88, 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. Hertz-Tang's median patient age at 70, with 47% women.
Dr. Hertz-Tang's Medicare patients by age, 2024
Dr. Hertz-Tang's Medicare patients by sex, 2024
- Women18450%
- Men18250%
Chronic conditions among Dr. Hertz-Tang's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes62%
- Heart failure51%
- Arthritis41%
- Ischemic heart disease40%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hertz-Tang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Amber L. Hertz-Tang wrote 1,563 Medicare Part D claims in 2024
In 2024, Dr. Hertz-Tang wrote 1,563 Medicare Part D claims for 398 patients. 87% of them were for generic drugs. CMS names the drug for 1,289 of them, across 32 drugs with 11 or more claims each, at $226,282 in total drug cost. In 2023, CMS named 902 claims across 28 drugs.
Dr. Hertz-Tang's Part D claims by kind of drug, 2024
- Generic1,353 claims87%
- Brand-name210 claims13%
Dr. Hertz-Tang'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: 9022024: 1,28943%
Drugs named by CMS: 32 in 2024, 28 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. Amber L. Hertz-Tang offers telehealth to Medicare patients
Dr. Hertz-Tang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hertz-Tang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Amber L. Hertz-Tang received $15 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Hertz-Tang from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Travere Therapeutics, Inc. paid the most, $15.
Companies that paid Dr. Hertz-Tang 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. Amber L. Hertz-Tang graduated from David Geffen School of Medicine at UCLA
Dr. Hertz-Tang graduated from David Geffen School of Medicine at UCLA in 2022.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Amber L. Hertz-Tang accepts plans from 17 insurance carriers
Dr. Hertz-Tang is in network with 17 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +9 more carriersWith a free account
Plan types Dr. Hertz-Tang accepts, by number of carriers
- PPO11
- HMO9
- Medicare9
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Amber L. Hertz-Tang'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Amber L. Hertz-Tang
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. Amber L. Hertz-Tang's NPI number?
Dr. Amber L. Hertz-Tang's NPI number is 1750700076. It was assigned on April 15, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Amber L. Hertz-Tang?
Dr. Amber L. Hertz-Tang is a nephrologist in Portland, Oregon. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Amber L. Hertz-Tang practice?
Dr. Hertz-Tang practices at 9155 SW Barnes Rd, Portland, OR 97225. Dr. Hertz-Tang's primary practice is Northwest Renal Clinic, Inc. in Portland, Oregon. Dmand AI also links Dr. Hertz-Tang to 4 hospitals, 5 dialysis centers and 1 group practice or clinic.
What is Dr. Amber L. Hertz-Tang's office phone number?
The practice phone on file for Dr. Hertz-Tang is (503) 229-7976.
What is Dr. Amber L. Hertz-Tang's medical license number?
Dr. Hertz-Tang's Oregon license number on file is MD201408, one of the licenses on file in 3 states.
Which states has Dr. Amber L. Hertz-Tang been licensed in?
Dmand AI has state licenses on file for Dr. Hertz-Tang in Oregon (2020 to 2025), Washington (2020 to 2027) and Wisconsin (2016 to 2021).
Which hospitals is Dr. Amber L. Hertz-Tang affiliated with?
Dr. Hertz-Tang is affiliated with OHSU Hospital. Dmand AI links Dr. Hertz-Tang to 4 more hospitals.
What medical group is Dr. Amber L. Hertz-Tang part of?
Dr. Hertz-Tang is linked to Northwest Renal Clinic.
Does Dr. Amber L. Hertz-Tang accept Medicare?
Yes. CMS data shows Dr. Hertz-Tang billed Medicare for 1,105 services in 2024, and Dr. Hertz-Tang accepts Medicare assignment.
Does Dr. Amber L. Hertz-Tang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hertz-Tang as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Amber L. Hertz-Tang see?
CMS counts 366 Medicare patients who saw Dr. Hertz-Tang in 2024, with an average age of 70.
Is Dr. Amber L. Hertz-Tang board certified?
Yes. Dr. Hertz-Tang is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Amber L. Hertz-Tang bill to Medicare?
In 2024, Dr. Hertz-Tang's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and dialysis (90960).
Where did Dr. Amber L. Hertz-Tang go to medical school?
Dr. Hertz-Tang graduated from David Geffen School of Medicine at UCLA in 2022.
What drugs does Dr. Amber L. Hertz-Tang prescribe most?
In 2024 Medicare Part D data, Dr. Hertz-Tang's most prescribed drugs by claims were Amlodipine Besylate, Torsemide and Losartan Potassium.
Has Dr. Amber L. Hertz-Tang received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Hertz-Tang from 1 company from 2023 to 2023. The largest total came from Travere Therapeutics, Inc.
How long has Dr. Amber L. Hertz-Tang been practicing?
Dr. Hertz-Tang graduated from medical school in 2022, 4 years ago.
What insurance does Dr. Amber L. Hertz-Tang accept?
Dr. Hertz-Tang is in network with 17 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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