Dr. Amber L. Hertz-Tang, MD

  • Portland, OR
  • Nephrologist
NPI1750700076PAC ID8224332705
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Northwest Renal Clinic, Inc.

Portland, Oregon

See all 13 affiliations

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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 and contact details
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
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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.

See all 13 affiliations for Dr. Hertz-Tang

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.

EHR by site
SiteEHR vendor and product
Northwest Renal Clinic, Inc.Available with a free account
+11 more affiliated sitesAvailable 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, OregonPrimaryLicense MD201408 · 2020 to 2025 · taxonomy 207RN0300X
  • Washington license2020 to 2027
  • Wisconsin license2016 to 2021

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.

Medicare services, 20241,105
Medicare patients366
Paid by Medicare$112,951
Procedure codes13

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.

See all procedures by Dr. Hertz-Tang

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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.

Medicare patients, 2024366
Average age70
Average risk score4.88
Also on Medicaid28%

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

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes62%
  5. Heart failure51%
  6. Arthritis41%
  7. Ischemic heart disease40%
  8. 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.

Part D claims, 20241,563
Drugs named by CMS32
Total drug cost$226,282
Part D patients398

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.

See all prescribing by Dr. Hertz-Tang

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)

For MedTech and pharma teams

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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.

See all payments to Dr. Hertz-Tang

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.

  1. Medical schoolDavid Geffen School of Medicine at UCLA
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in nephrologyAmerican Board of Internal Medicine

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.

Plan types Dr. Hertz-Tang accepts, by number of carriers

  1. PPO11
  2. HMO9
  3. Medicare9
  4. POS5
  5. EPO4
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Amber L. Hertz-Tang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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