Hangama Abassi , NP
Nurse Practitioner โข Walnut Creek, CA
177 La Casa Via Ste 390
Walnut Creek, CA 945986101
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on November 7, 2013; this date does not establish years in practice.
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Published CMS data list 14 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 38222 โ Biopsy and aspiration of bone marrow sample for diagnosis: 14 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 77 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Acyclovir โ 18 prescription fills, including refills.
- Levofloxacin โ 16 prescription fills, including refills.
- Potassium Chloride โ 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 24 clinicians with data). Median for this group: 540. Middle half: 261 to 824.
Fewer Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: 201. Middle half: 73 to 538.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 524 in 2018 to 14 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2018โ2024.
Practice Location & Contact Primary Location
177 La Casa Via Ste 390
Walnut Creek, CA 945986101
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: John Muir Physician Network. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2013
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
15 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $982 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $795 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
81 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$15,230 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $1,731.87 across 65 records.
By nature of payment
- Food and Beverage: $1,639.88 across 64 records.
- Education: $91.99 across 1 record.
Reporting-company totals (3 largest of 22)
- Merck Sharp & Dohme LLC: $230.42 across 9 records.
- Novartis Pharmaceuticals Corporation: $184.29 across 8 records.
- Pfizer Inc.: $171.09 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2013
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Hangama Abassi has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Hangama Abassi as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Walnut Creek and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 24 clinicians with data). Median for this group: 540. Middle half: 261 to 824.
Fewer Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: 201. Middle half: 73 to 538.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 24 clinicians with data). Median for this group: $55,091. Middle half: $31,825 to $78,911.
A lower Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: $18,428. Middle half: $6,851 to $46,917.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 24 clinicians with data). Median for this group: $40,709. Middle half: $24,562 to $60,291.
A lower Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: $13,640. Middle half: $4,992 to $34,836.
Medicare Part D prescriptions
Fewer Part D prescriptions than 65% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 27 clinicians with data). Median for this group: 450. Middle half: 63 to 1,244.
Fewer Part D prescriptions than 70% of clinicians listed under Nurse Practitioner in California (2024, 3,221 clinicians with data). Median for this group: 248. Middle half: 63 to 852.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Nurse Practitioner in Walnut Creek, CA (2024, 27 clinicians with data). Median for this group: $32,751. Middle half: $2,821 to $117,812.
Close to the middle for clinicians listed under Nurse Practitioner in California (2024, 3,221 clinicians with data). Median for this group: $13,982. Middle half: $995 to $121,041.
70 active clinicians are listed under Nurse Practitioner with a practice address in Walnut Creek, CA (8,237 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Walnut Creek
24.3% of these 70 clinicians have the CMS telehealth indicator.
40% of these 70 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 97% from 524 in 2018 to 14 in 2024.
- 2018: 524
- 2022: 15
- 2023: 26
- 2024: 14
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Medicare-allowed amount
Medicare-allowed amount decreased 85% from $6,493 in 2018 to $982 in 2024.
- 2018: $6,493
- 2022: $1,039
- 2023: $1,759
- 2024: $982
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Paid by Medicare
Paid by Medicare decreased 84% from $5,118 in 2018 to $795 in 2024.
- 2018: $5,118
- 2022: $828
- 2023: $1,347
- 2024: $795
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 95% from 1,492 in 2018 to 77 in 2024.
- 2018: 1,492
- 2019: 390
- 2022: 76
- 2023: 30
- 2024: 77
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30-day fills
30-day fills decreased 96% from 2,002 in 2018 to 81 in 2024.
- 2018: 2,002
- 2019: 662
- 2022: 77
- 2023: 32
- 2024: 81
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Part D drug cost
Part D drug cost decreased 98% from $754,211 in 2018 to $15,230 in 2024.
- 2018: $754,211
- 2019: $104,602
- 2022: $51,339
- 2023: $291
- 2024: $15,230
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $187.30 in 2022 to $1,731.87 in 2025.
- 2022: $187.30
- 2023: $670.02
- 2024: $695.03
- 2025: $1,731.87
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 65 records totaling $1,731.87.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PADCEV | General | $117.04 |
| Pfizer Inc. |
Education
In-kind items and services
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โ | General | $91.99 |
| Legend Biotech USA Inc. |
Food and Beverage
In-kind items and services
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CARVYKTI | General | $53.96 |
| SERVIER PHARMACEUTICALS LLC |
Food and Beverage
In-kind items and services
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Tibsovo | General | $38.80 |
| Legend Biotech USA Inc. |
Food and Beverage
In-kind items and services
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CARVYKTI | General | $38.71 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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REBLOZYL | General | $33.59 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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KISQALI | General | $33.48 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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ENHERTU | General | $32.32 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $32.05 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
KISQALI | General | $31.56 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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IBRANCE | General | $31.25 |
| Exelixis Inc. |
Food and Beverage
In-kind items and services
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CABOMETYX | General | $30.29 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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VERZENIO | General | $30.10 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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KEYTRUDA | General | $28.81 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
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Enhertu | General | $28.79 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
KEYTRUDA | General | $28.64 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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KISQALI | General | $28.62 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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CARVYKTI | General | $28.52 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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LYNPARZA | General | $28.18 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
|
DATROWAY | General | $27.85 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
FARAPULSE | General | $27.65 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
FARAPULSE | General | $27.53 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
LUTATHERA | General | $27.52 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
KEYTRUDA | General | $27.30 |
| Daiichi Sankyo Inc. |
Food and Beverage
In-kind items and services
|
DATROWAY | General | $26.80 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2018โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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38222
Biopsy and aspiration of bone marrow sample for diagnosis
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14 | 13 | $619.00 | $70.12 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Acyclovir | Acyclovir | 18 | 345 | $143.98 | โ |
| Levofloxacin | Levofloxacin | 16 | 487 | $107.23 | โ |
| Potassium Chloride | Potassium Chloride | 15 | 201 | $304.33 | โ |
| Pantoprazole Sodium | Pantoprazole Sodium | 14 | 480 | $78.83 | โ |
| Posaconazole | Posaconazole | 14 | 308 | $14,595.23 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-02-24NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20140812001999
CA
7517184716
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
John Muir Physician Network
2675 Pleasant Hill Rd, Pleasant Hill, CA 945232033
Phone: 9256925520
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Medical Oncology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 177 LA CASA VIA STE 390, WALNUT CREEK, CA 945986101 (Tel: 9256775041)
Registered at 1450 TREAT BLVD STE 300, WALNUT CREEK, CA 945972168 (Tel: 9259522828)
Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7144568100)
Registered at 200 S MANCHESTER AVE STE 300, ORANGE, CA 928683219 (Tel: 7144562986)
NPI status registered as active in NPPES database
Registered at 317 W PUEBLO ST, SANTA BARBARA, CA 931054310 (Tel: 8056811761)
Registered at PO BOX 62106, SANTA BARBARA, CA 931602106 (Tel: 8056811761)
Recorded as HANGAMA ABASSI, N.P.
Nurse Practitioner (license number reported to NPPES: CA 95000027)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Walnut Creek
- Emily Cruz, NP
- Sarah Buenviaje, MSN, ONP
- Stephanie Chan, FNP-BC
- Angela Danko, NP
- Karen Sonnenthal, NP
- Nicole Alexander, NP
Mailing Address
1450 Treat Blvd Ste 300
Walnut Creek, CA 945972168
Phone: 9259522828