Greti Ileana Petersen

  • Bakersfield, CA
  • Internist
NPI1144252040PAC ID9537163191
Medicare services, 2024
25
Medicare patients, 2024
53
Part D claims, 2024
808
Publications
13
MIPS score, 2024
88
Practice address
625 34th St, Bakersfield, CA 93301
Practice phone
Call (883) 678-2781
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Comprehensive Care Center

FQHC - Main Site · Bakersfield, California

See all 4 affiliations

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Greti Ileana Petersen is an internist in Bakersfield, California

Greti Petersen practices at Comprehensive Care Center in Bakersfield, California.

Greti Petersen's NPI, 1144252040, was assigned on July 7, 2006. Greti Petersen graduated from University of Craiova Faculty of Medicine in 1992. Greti Petersen holds California license A93553.

NPI and contact details
Medicare PAC ID
9537163191
NPI enumeration date
July 7, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(883) 678-2781
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
60
Medical school graduation
1992

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

Greti Ileana Petersen practices at Comprehensive Care Center in Bakersfield, California

Greti Petersen's primary practice is Comprehensive Care Center, at 625 34th St, Bakersfield, CA 93301 in Kern County. The practice phone is (883) 678-2781.

  • Comprehensive Care Center
    625 34th St, Bakersfield, CA 93301 · Kern CountyPhone(883) 678-2781

Source: Dmand AI Affiliation Data

Greti Ileana Petersen is affiliated with 2 sites of care and 2 medical groups

Greti Petersen's primary practice is Comprehensive Care Center in Bakersfield, California. Greti Petersen is also affiliated with Adventist Health Bakersfield. The medical group on file is Kern Medical. Dmand AI also links Greti Petersen to 1 more medical group, named with a free account. Greti Petersen's employer is on file too: a community health center (fqhc).

See all 4 affiliations for Greti Petersen

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Greti Ileana Petersen's practice

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

EHR by site
SiteEHR vendor and product
Comprehensive Care CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Greti Ileana Petersen is one of 16,751 internists in California

Internal medicine is Greti Petersen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Greti Petersen is board certified in internal medicine by the American Board of Internal Medicine. Greti Petersen is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A93553 · 2005 to 2027 · taxonomy 207R00000X

Clinical focus

Dmand AI lists acute diabetes, acute respiratory failure, anemia, arthritis, chronic diabetes, chronic hypertension, cold sores or genital herpes and coronary artery disease among the conditions Greti Petersen treats.

Internists near Greti Petersen

Counts of internists 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

Greti Ileana Petersen billed Medicare for 25 services in 2024

CMS data shows 25 Medicare services from Greti Petersen across 1 procedure code in 2024, all of them office visits, for 53 Medicare patients. Medicare paid $2,400 for them. Every service was in an office.

Medicare services, 202425
Medicare patients53
Paid by Medicare$2,400
Procedure codes1

Greti Petersen's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2972024: 2592%

Greti Petersen compared with the California median for internists, 2024

  • Greti Petersen
  • California median
Medicare services
25vs 36193% below
Medicare patients
53vs 15165% below
Part D claims
473vs 42112% above

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Greti Petersen'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 Greti Petersen

Need commercial claims for Greti Petersen?

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

Greti Ileana Petersen treated 53 Medicare patients in 2024, average age 71

CMS counts 53 Medicare patients who saw Greti Petersen in 2024. The largest group is 65 to 74, with 26 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 58% are also on Medicaid. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Greti Petersen's median patient age at 52, with 62% women.

Medicare patients, 202453
Average age71
Average risk score1.67
Also on Medicaid58%

Greti Petersen's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Greti Petersen's Medicare patients by sex, 2024

  • Women3566%
  • Men1834%

Chronic conditions among Greti Petersen's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis49%
  4. Diabetes45%
  5. Ischemic heart disease40%
  6. Chronic kidney disease34%
  7. Anxiety28%
  8. Tobacco use26%

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

Greti Petersen's patients across all payers

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

Patient panel by age, all payers

Median age 52

Patient panel by sex, all payers

  • Women62%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Greti Ileana Petersen wrote 808 Medicare Part D claims in 2024

In 2024, Greti Petersen wrote 808 Medicare Part D claims for 151 patients. 85% of them were for generic drugs. CMS names the drug for 473 of them, across 18 drugs with 11 or more claims each, at $13,631 in total drug cost. In 2023, CMS named 397 claims across 18 drugs.

Part D claims, 2024808
Drugs named by CMS18
Total drug cost$13,631
Part D patients151

Greti Petersen's Part D claims by kind of drug, 2024

  • Generic688 claims85%
  • Brand-name and other120 claims15%

Greti Petersen'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.

Drug classes CMS tracks in Greti Petersen's Part D claims, 2024

  • Antibiotics3%22 of 808 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 3972024: 47319%

Drugs named by CMS: 18 in 2024, 18 in 2023.

See all prescribing by Greti Petersen

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

Greti Ileana Petersen scored 88 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Greti Petersen for performance year 2024, reported as part of a group. Greti Petersen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Greti Petersen's MIPS scores, performance year 2024

  • 88of 100Final score
  • 47.7of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 82of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Greti Ileana Petersen has 13 publications on record

Dmand AI links 13 papers to Greti Petersen, published from 2015 to 2022. The most frequent topics are Lymphohistiocytosis, Hemophagocytic and Endocarditis, Bacterial. Greti Petersen has published most often in J Investig Med High Impact Case Rep. Greti Petersen's most frequent co-authors are Everardo Cobos, MD, Roopam Jariwal, MD and Tushar Bajaj, MD.

Papers13
Years published2015 to 2022

Greti Petersen's papers by year, 2015 to 2022

Topics Greti Petersen writes about most

  • Lymphohistiocytosis, Hemophagocytic
  • Endocarditis, Bacterial

Greti Petersen's most frequent co-authors

Recent publications by Greti Petersen

See all 13 publications and co-authors

See who Greti Petersen researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Greti Petersen works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Greti Ileana Petersen received $2,858 in industry payments from 2016 to 2025

CMS Open Payments shows 150 general payments to Greti Petersen from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Astellas Pharma US Inc paid the most, $450.

General payments to Greti Petersen by program year, 2016 to 2025

General payments to Greti Petersen by kind, 2016 to 2025

$2.9Kin total
  • Food and beverage$2,77897%
  • Education$803%

Companies that paid Greti Petersen the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Greti Petersen

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

Greti Ileana Petersen graduated from University of Craiova Faculty of Medicine

Greti Petersen graduated from University of Craiova Faculty of Medicine in 1992. Greti Petersen is a member of AAIM and ACP.

  1. Medical schoolUniversity of Craiova Faculty of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in obesity medicineAmerican Board of Obesity Medicine

Source: Dmand AI Professional Profile Data

Greti Ileana Petersen accepts plans from 8 insurance carriers

Greti Petersen is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • CMS Medicare
  • Humana
  • Molina

Plan types Greti Petersen accepts, by number of carriers

  1. Medicare7
  2. PPO5
  3. HMO4
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Greti Ileana Petersen'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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 Greti Ileana Petersen

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Greti Ileana Petersen's NPI number?

Greti Ileana Petersen's NPI number is 1144252040. It was assigned on July 7, 2006, and it is active in the NPI Registry.

What does Greti Ileana Petersen specialize in?

Greti Ileana Petersen is an internist in Bakersfield, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Greti Ileana Petersen practice?

Greti Petersen practices at 625 34th St, Bakersfield, CA 93301. Greti Petersen's primary practice is Comprehensive Care Center in Bakersfield, California. Dmand AI also links Greti Petersen to 1 medical group.

What is Greti Ileana Petersen's office phone number?

The practice phone on file for Greti Petersen is (883) 678-2781.

What is Greti Ileana Petersen's medical license number?

Greti Petersen holds California license A93553.

Which hospitals is Greti Ileana Petersen affiliated with?

Greti Petersen is affiliated with Adventist Health Bakersfield.

What medical group is Greti Ileana Petersen part of?

Greti Petersen is linked to Kern Medical. Dmand AI links Greti Petersen to 1 more medical group.

Does Greti Ileana Petersen accept Medicare?

Yes. CMS data shows Greti Petersen billed Medicare for 25 services in 2024, and Greti Petersen accepts Medicare assignment.

What is Greti Ileana Petersen's MIPS score?

Greti Petersen's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.

How many Medicare patients does Greti Ileana Petersen see?

CMS counts 53 Medicare patients who saw Greti Petersen in 2024, with an average age of 71.

Show 9 more questionsShow fewer questions

Is Greti Ileana Petersen board certified?

Yes. Greti Petersen is board certified in internal medicine by the American Board of Internal Medicine.

What services does Greti Ileana Petersen bill to Medicare?

In 2024, Greti Petersen's most billed Medicare services were office visit, established patient (99214).

Where did Greti Ileana Petersen go to medical school?

Greti Petersen graduated from University of Craiova Faculty of Medicine in 1992.

What drugs does Greti Ileana Petersen prescribe most?

In 2024 Medicare Part D data, Greti Petersen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.

Has Greti Ileana Petersen received payments from drug or device companies?

CMS Open Payments shows $2,858 in general payments to Greti Petersen from 29 companies from 2016 to 2025. The largest total came from Astellas Pharma US Inc.

How long has Greti Ileana Petersen been practicing?

Greti Petersen graduated from medical school in 1992, 34 years ago.

Does Greti Ileana Petersen do research?

Dmand AI links 13 publications to Greti Petersen, published from 2015 to 2022.

Who does Greti Ileana Petersen publish with?

Greti Petersen's most frequent co-authors are Everardo Cobos, MD (5 shared papers), Roopam Jariwal, MD (3 shared papers) and Tushar Bajaj, MD (2 shared papers).

What insurance does Greti Ileana Petersen accept?

Greti Petersen is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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