AMBER L HERTZ-TANG MD
NPI 1750700076
Internal Medicine - Nephrology in Portland, OR

Q: What is Amber Hertz-tang's NPI number?

The NPI number for Amber Hertz-tang is 1750700076. It was assigned to this individual provider in the NPPES registry on April 15, 2014. The provider is also known as Amber L Hertz.

Q: What is Amber Hertz-tang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Amber Hertz-tang was last updated on September 25, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 15, 2014PECOS EnrolledAccepts Medicare Assignment

9155 SW BARNES RD STE 402, PORTLAND, OR 97225(503) 292-7704(503) 292-7046 Get Directions Write a Review

NPPES record last updated: September 25, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 30, 2021, Sep 23, 2020, Feb 13, 2017 (3 updates tracked since 2017).

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About Amber L Hertz-tang Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AMBER L HERTZ-TANG MD (NPI 1750700076) is an individual nephrology provider in Portland, Oregon, licensed in Oregon (MD201408) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Providence St Vincent Medical Center, and is a graduate of University Of Wisconsin School Of Medicine (2014).

NPPES Registry Identity

NPI1750700076

Entity TypeIndividualFemale

Primary Taxonomy207RN0300X

Provider Legal NameAMBER L HERTZ-TANGCredential: MD

Location Address9155 SW BARNES RD STE 402Portland, OR 97225-6631

Mailing AddressPo Box 3068Portland, OR 97208-3068 · (503) 229-7976 · Fax (503) 274-4867

Phone(503) 292-7704

Fax(503) 292-7046

Sole ProprietorNo

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2014

Enumeration DateApril 15, 2014

Last NPPES UpdateSeptember 25, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 25, 2025

✔ NPI 1750700076 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

Licenses✔ Licensed in OR · MD201408✔ Licensed in WA · MD61053860

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

9155 SW BARNES RD STE 402, Portland, OR 97225

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Other Names 1

Former Name (1)Amber L Hertz

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Amber L Hertz-tang Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8224332705

PECOS Enrollment IDI20201014003791

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

188 services123 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

182 services50 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

120 services63 patients

Hemodialysis procedure with physician evaluation 90935

Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.

98 services56 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

77 services44 patients

Dialysis procedure including 1 evaluation 90945

Dialysis is a treatment that filters and purifies the blood when your kidneys can't do their job. The procedure involves circulating your blood through a machine that removes waste products. An evaluation is done beforehand to assess your health and determine the best approach for your treatment.

46 services15 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

44 services41 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

42 services42 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

33 services25 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

29 services14 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

19 services19 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Providence St Vincent Medical Center

Acute Care Hospitals · Portland, OR

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number380004

Location9205 SW Barnes RoadPortland, OR 97225 · Washington County

Emergency services Birthing friendly

Ohsu Hospital And Clinics

Acute Care Hospitals · Portland, OR

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number380009

Location3181 SW Sam Jackson Park RoadPortland, OR 97239 · Multnomah County

Emergency services Birthing friendly

Hillsboro Medical Center

Acute Care Hospitals · Hillsboro, OR

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number380021

Location335 SE 8th AvenueHillsboro, OR 97123 · Washington County

Emergency services Birthing friendly

Columbia Memorial Hospital

Critical Access Hospitals · Astoria, OR

OwnershipProprietary

CMS Certification Number381320

Location2111 Exchange StreetAstoria, OR 97103 · Clatsop County

Emergency services Birthing friendly

Ocean Beach Hospital

Critical Access Hospitals · Ilwaco, WA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number501314

Location174 First Avenue NorthIlwaco, WA 98624 · Pacific County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97225 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.16 typical visit price

range $58.99 – $176.88

Typical copayment $33.54 (range $14.74 – $44.22)

Most-billed visit code 99204

Established Patient

$103.51 typical visit price

range $19.32 – $144.79

Typical copayment $25.87 (range $4.83 – $36.19)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers20 claims3,000 services$0.01 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

4 suppliers20 claims20 services$17.98 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

5 suppliers16 claims16 services$12.64 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MITCHELL A HAWKEY MD

Internal Medicine (Nephrology)