Darla Oak
Nurse Practitioner • Reseda, CA
7150 Tampa Ave
Reseda, CA 913353700
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on November 15, 2006; this date does not establish years in practice.
-
Published CMS data list 1,083 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 99211 — outpatient office visit: 554 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 487 service units.
- 99307 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 42 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 · Guide: How to read Medicare Part B data
-
Published CMS data list 764 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Gabapentin — 150 prescription fills, including refills.
- Levothyroxine Sodium — 89 prescription fills, including refills.
- Furosemide — 46 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 30 records in the table · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 85% 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 – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 3,933 in 2020 to 1,083 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
7150 Tampa Ave
Reseda, CA 913353700
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: Jha Geriatric Services Inc. 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
2006
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
205 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 – by Provider, 2024.
Medicare-allowed amount
About $63,477 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 – by Provider and Service, 2024.
Paid by Medicare
About $50,036 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 – by Provider and Service, 2024.
30-day fills
773 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
$30,668 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 – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
Years since graduation
20 years (graduated 2006)
CMS Doctors and Clinicians data list 2006 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
2006
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, “Does your provider accept Medicare as full payment?”
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)
Darla Oak 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 Darla Oak 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 Reseda and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: 201. Middle half: 73 to 538.
Too few clinicians listed under Nurse Practitioner in Reseda have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% 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.
Too few clinicians listed under Nurse Practitioner in Reseda have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 80% 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.
Too few clinicians listed under Nurse Practitioner in Reseda have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More 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.
Too few clinicians listed under Nurse Practitioner in Reseda have Medicare Part D data for 2024 to compare.
Part D drug cost
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.
Too few clinicians listed under Nurse Practitioner in Reseda have Medicare Part D data for 2024 to compare.
9 active clinicians are listed under Nurse Practitioner with a practice address in Reseda, CA (8,237 in California).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services decreased 72% from 3,933 in 2020 to 1,083 in 2024.
- 2020: 3,933
- 2021: 2,966
- 2022: 5,299
- 2023: 4,030
- 2024: 1,083
-
Medicare-allowed amount
Medicare-allowed amount decreased 50% from $127,913 in 2020 to $63,477 in 2024.
- 2020: $127,913
- 2021: $105,018
- 2022: $158,573
- 2023: $130,139
- 2024: $63,477
-
Paid by Medicare
Paid by Medicare decreased 57% from $116,746 in 2020 to $50,036 in 2024.
- 2020: $116,746
- 2021: $90,398
- 2022: $140,291
- 2023: $116,237
- 2024: $50,036
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 905% from 76 in 2020 to 764 in 2024.
- 2020: 76
- 2021: 51
- 2022: 69
- 2023: 504
- 2024: 764
-
30-day fills
30-day fills increased 907% from 77 in 2020 to 773 in 2024.
- 2020: 77
- 2021: 51
- 2022: 69
- 2023: 512
- 2024: 773
-
Part D drug cost
Part D drug cost increased 2351% from $1,251 in 2020 to $30,668 in 2024.
- 2020: $1,251
- 2021: $2,148
- 2022: $1,031
- 2023: $32,061
- 2024: $30,668
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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 |
|---|---|---|---|---|
|
99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
|
554 | 134 | $26.31 | $23.23 |
|
99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
|
487 | 183 | $113.80 | $100.67 |
|
99307
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes
|
42 | 36 | $42.61 | $37.66 |
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 |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 150 | 4,198 | $2,448.83 | 21 |
| Levothyroxine Sodium | Levothyroxine Sodium | 89 | 2,506 | $1,431.06 | 14 |
| Furosemide | Furosemide | 46 | 939 | $236.28 | 16 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 37 | 581 | $1,119.98 | — |
| Eliquis | Apixaban | 34 | 470 | $9,920.56 | — |
| Cephalexin | Cephalexin | 28 | 162 | $286.70 | 22 |
| Myrbetriq | Mirabegron | 28 | 392 | $6,673.29 | — |
| Omeprazole | Omeprazole | 27 | 746 | $422.14 | — |
| Pantoprazole Sodium | Pantoprazole Sodium | 24 | 631 | $366.91 | — |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 22 | 339 | $302.35 | — |
| Potassium Chloride | Potassium Chloride | 19 | 536 | $1,264.70 | — |
| Mupirocin | Mupirocin | 19 | 317 | $451.16 | 12 |
| Lisinopril | Lisinopril | 18 | 468 | $118.25 | — |
| Lidocaine | Lidocaine | 18 | 363 | $1,753.92 | — |
| Prednisone | Prednisone | 17 | 315 | $130.75 | — |
| Warfarin Sodium | Warfarin Sodium | 16 | 110 | $71.64 | — |
| Ketoconazole | Ketoconazole | 14 | 440 | $336.81 | — |
| Nystop | Nystatin | 14 | 440 | $912.85 | 11 |
| Topiramate | Topiramate | 13 | 323 | $145.73 | — |
| Famotidine | Famotidine | 13 | 345 | $108.50 | — |
| Hydrocortisone | Hydrocortisone | 13 | 119 | $205.92 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 12 | 366 | $51.42 | — |
| Diazepam | Diazepam | 12 | 366 | $84.30 | — |
| Losartan Potassium | Losartan Potassium | 12 | 366 | $204.73 | — |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 12 | 366 | $517.63 | — |
(top 25 shown)
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
NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20070626000401
CA
6103925581
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
Jha Geriatric Services Inc
18855 Victory Blvd, Reseda, CA 913356445
Phone: 8187743139
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
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Gerontology
Career & Practice History
NPI enumerated November 15, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Reseda
Mailing Address
5427 Bevis Ave
Sherman Oaks, CA 914113743
Phone: 8185150365