Dr. Deborah W Wollum , DC
Chiropractor • Simi Valley, CA
2232 Mcdonald St
Simi Valley, CA 930652425
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 29, 2006; this date does not establish years in practice.
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Published CMS data list 299 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 98942 — Chiropractic manipulative treatment, 5 spinal regions: 299 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Medicare Part B services went from 438 in 2018 to 299 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
2232 Mcdonald St
Simi Valley, CA 930652425
What Public CMS Data Show
Chiropractor: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
32 people with Original Medicare in 2022
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2022.
Medicare-allowed amount
About $16,789 in 2022
The total amount Medicare approved for these services in 2022. 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, 2022.
Paid by Medicare
About $12,202 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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, 2022.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Compared with the same specialty in Simi Valley and California
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Wollum are from 2022.
32 active clinicians are listed under Chiropractor with a practice address in Simi Valley, CA (11,550 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Simi Valley
0% of these 32 clinicians have the CMS telehealth indicator.
15.6% of these 32 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 32% from 438 in 2018 to 299 in 2022.
- 2018: 438
- 2019: 334
- 2020: 266
- 2021: 303
- 2022: 299
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $18,269 in 2018 and $16,789 in 2022.
- 2018: $18,269
- 2019: $14,769
- 2020: $15,396
- 2021: $17,307
- 2022: $16,789
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Paid by Medicare
Paid by Medicare stayed about the same: $13,324 in 2018 and $12,202 in 2022.
- 2018: $13,324
- 2019: $11,283
- 2020: $11,693
- 2021: $13,232
- 2022: $12,202
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 2016–2021 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, 2017–2022; 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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98942
Chiropractic manipulative treatment, 5 spinal regions
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299 | 31 | $120.00 | $56.15 |
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-05-06NUCC Taxonomy Code: 111N00000X
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2232 MCDONALD ST, SIMI VALLEY, CA 930652425 (Tel: 8053777610)
Registered at 2232 MCDONALD ST, SIMI VALLEY, CA 930652425 (Tel: 8053777610)
Registered at 3655 ALAMO ST STE 201, SIMI VALLEY, CA 930632187 (Tel: 8055202780)
Registered at 3655 ALAMO ST STE 201, SIMI VALLEY, CA 930632187 (Tel: 8055202780)
NPI status registered as active in NPPES database
Registered at 3200E LOS ANGELES AVE 26, SIMI VALLEY, CA 930653971 (Tel: 8055202780)
Registered at 3200E LOS ANGELES AVE 26, SIMI VALLEY, CA 930653971 (Tel: 8055202780)
Recorded as DEBORAH WOLLUM, DC
Chiropractor (license number reported to NPPES: CA DC20444)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Chiropractors in Simi Valley
- Dr. Peter Silecchio, DC
- Dr. Shawn Decloedt, DC
- Dr. Paul Brandt, DC
- Dr. Angela Spagna, DC
- Dr. Yaniv Dvora, DC
- Dr. Jan Suckut, DC
Mailing Address
2232 Mcdonald St
Simi Valley, CA 930652425
Phone: 8053777610