Dr. Gregory Krastein, MD

  • Los Angeles, CA
  • Nephrologist
NPI1942358759PAC ID4587571252
Medicare services, 2024
56
Medicare patients, 2024
46
Part D claims, 2024
1,205
Hospital affiliations
1
Industry payments
$717
Practice address
200 Medical Plz, Los Angeles, CA 90024
Practice phone
Call (310) 794-9206
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Peter Morton UCLA Medical Building

Los Angeles, California

See all 5 affiliations

Find Dr. Krastein'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.

View contacts for free

Dr. Gregory Krastein is a nephrologist in Los Angeles, California

Dr. Krastein practices at Peter Morton UCLA Medical Building in Los Angeles, California.

Dr. Krastein's NPI, 1942358759, was assigned on January 8, 2007. Dr. Krastein graduated from George Washington University School of Medicine and Health Sciences in 1989. Dr. Krastein holds California license G70211.

NPI and contact details
Medicare PAC ID
4587571252
NPI enumeration date
January 8, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(310) 794-9206
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
62
Medical school graduation
1989

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Gregory Krastein practices at Peter Morton UCLA Medical Building in Los Angeles, California

Dr. Krastein's primary practice is Peter Morton UCLA Medical Building, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 794-9206.

  • Peter Morton UCLA Medical Building
    200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 794-9206

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Gregory Krastein is affiliated with 3 sites of care and 2 medical groups

Dr. Krastein's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dr. Krastein is also affiliated with Kaiser Permanente Moanalua Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Krastein to 1 more group practice or clinic and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Krastein

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Gregory Krastein's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Krastein practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Peter Morton UCLA Medical BuildingAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Krastein practices

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. Gregory Krastein is one of 1,401 nephrologists in California

Nephrology is Dr. Krastein's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Krastein is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Krastein's licenses on file in 2 states: California and Hawaii.

Specialties and state licenses

  • Nephrology, CaliforniaPrimaryLicense G70211 · 1990 to 2026 · taxonomy 207RN0300X
  • Hawaii license2025 to 2026

Clinical focus

Dmand AI lists acute kidney failure, chronic hypertension, chronic kidney disease, essential tremor, fluid and electrolyte imbalances, lower back pain, parathyroid gland disorder and tobacco use among the conditions Dr. Krastein treats.

Nephrologists near Dr. Krastein

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. Gregory Krastein billed Medicare for 56 services in 2024

CMS data shows 56 Medicare services from Dr. Krastein across 2 procedure codes in 2024, all of them office visits, for 46 Medicare patients. Medicare paid $3,568 for them. Every service was in an office.

Medicare services, 202456
Medicare patients46
Paid by Medicare$3,568
Procedure codes2

Dr. Krastein's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1042024: 5646%

Dr. Krastein compared with the California median for nephrologists, 2024

  • Dr. Krastein
  • California median
Medicare services
56vs 1,08495% below
Medicare patients
46vs 30785% below
Part D claims
1,039vs 9559% above

Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.

Dr. Krastein'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. Krastein

Need commercial claims for Dr. Krastein?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Krastein and other nephrologists in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Gregory Krastein treated 46 Medicare patients in 2024, average age 74

CMS counts 46 Medicare patients who saw Dr. Krastein in 2024. The largest group is 75 to 84, with 14 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 54% are also on Medicaid. Their average risk score is 3.38, 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. Krastein's median patient age at 65, with 46% women.

Medicare patients, 202446
Average age74
Average risk score3.38
Also on Medicaid54%

Dr. Krastein's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Krastein's Medicare patients by sex, 2024

  • Women2554%
  • Men2146%

Chronic conditions among Dr. Krastein's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes57%
  5. Arthritis43%
  6. Ischemic heart disease28%
  7. Anxiety24%

Share of Medicare patients with each condition. A patient can have several.

Dr. Krastein's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

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. Gregory Krastein wrote 1,205 Medicare Part D claims in 2024

In 2024, Dr. Krastein wrote 1,205 Medicare Part D claims for 287 patients. 89% of them were for generic drugs. CMS names the drug for 1,039 of them, across 22 drugs with 11 or more claims each, at $85,973 in total drug cost. In 2023, CMS named 1,133 claims across 23 drugs.

Part D claims, 20241,205
Drugs named by CMS22
Total drug cost$85,973
Part D patients287

Dr. Krastein's Part D claims by kind of drug, 2024

  • Generic1,071 claims89%
  • Brand-name and other134 claims11%

Dr. Krastein'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: 1,1332024: 1,0398%

Drugs named by CMS: 22 in 2024, 23 in 2023.

See all prescribing by Dr. Krastein

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. Gregory Krastein offers telehealth to Medicare patients

Dr. Krastein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Krastein as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

Find nephrologists like Dr. Krastein by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Gregory Krastein received $717 in industry payments from 2017 to 2024

CMS Open Payments shows 15 general payments to Dr. Krastein from 9 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $125.

General payments to Dr. Krastein by program year, 2017 to 2024

Companies that paid Dr. Krastein the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Krastein

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Gregory Krastein has 1 award and honors on record

Dmand AI lists 1 award for Dr. Krastein, most recently CMS Stage 1 2012 in 2011.

Awards and honors for Dr. Krastein

  1. 2011
    • CMS Stage 1 2012

Source: Dmand AI Professional Profile Data

Dr. Gregory Krastein graduated from George Washington University School of Medicine and Health Sciences

Dr. Krastein graduated from George Washington University School of Medicine and Health Sciences in 1989.

  1. Medical schoolGeorge Washington University School of Medicine and Health Sciences
  2. Board certified in nephrologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Gregory Krastein accepts plans from 7 insurance carriers

Dr. Krastein is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Kaiser Permanente. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Kaiser Permanente
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare

Plan types Dr. Krastein accepts, by number of carriers

  1. Medicare6
  2. PPO5
  3. HMO3
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Gregory Krastein'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)
Awards and committee rolesDmand AI Professional Profile Data
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. Gregory Krastein

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. Gregory Krastein's NPI number?

Dr. Gregory Krastein's NPI number is 1942358759. It was assigned on January 8, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregory Krastein?

Dr. Gregory Krastein is a nephrologist in Los Angeles, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).

Where does Dr. Gregory Krastein practice?

Dr. Krastein practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Krastein's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dmand AI also links Dr. Krastein to 1 group practice or clinic and 1 medical group.

What is Dr. Gregory Krastein's office phone number?

The practice phone on file for Dr. Krastein is (310) 794-9206.

What is Dr. Gregory Krastein's medical license number?

Dr. Krastein holds California license G70211, one of the licenses on file in 2 states.

Which states has Dr. Gregory Krastein been licensed in?

Dmand AI has state licenses on file for Dr. Krastein in California (1990 to 2026) and Hawaii (2025 to 2026).

Which hospitals is Dr. Gregory Krastein affiliated with?

Dr. Krastein is affiliated with Kaiser Permanente Moanalua Medical Center.

What medical group is Dr. Gregory Krastein part of?

Dr. Krastein is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Krastein to 1 more medical group.

Does Dr. Gregory Krastein accept Medicare?

Yes. CMS data shows Dr. Krastein billed Medicare for 56 services in 2024, and Dr. Krastein accepts Medicare assignment.

Does Dr. Gregory Krastein offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Krastein as offering telehealth services.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Gregory Krastein see?

CMS counts 46 Medicare patients who saw Dr. Krastein in 2024, with an average age of 74.

Is Dr. Gregory Krastein board certified?

Yes. Dr. Krastein is board certified in nephrology by the American Board of Internal Medicine.

What services does Dr. Gregory Krastein bill to Medicare?

In 2024, Dr. Krastein's most billed Medicare services were office visit, established patient (99214) and office visit, new patient (99204).

Where did Dr. Gregory Krastein go to medical school?

Dr. Krastein graduated from George Washington University School of Medicine and Health Sciences in 1989.

What drugs does Dr. Gregory Krastein prescribe most?

In 2024 Medicare Part D data, Dr. Krastein's most prescribed drugs by claims were Calcitriol, Lisinopril and Amlodipine Besylate.

Has Dr. Gregory Krastein received payments from drug or device companies?

CMS Open Payments shows $717 in general payments to Dr. Krastein from 9 companies from 2017 to 2024. The largest total came from Relypsa, Inc.

How long has Dr. Gregory Krastein been practicing?

Dr. Krastein graduated from medical school in 1989, 37 years ago.

What insurance does Dr. Gregory Krastein accept?

Dr. Krastein is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Kaiser Permanente. Medicare plans come from the most carriers, 6. 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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)