2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1629089529 MD
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KENNETH GRABOW, MD

Pain Medicine (Anesthesiology) Physician in SANTA ANA, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 168 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KENNETH GRABOW, MD filed 1,505 Medicare Part D claims in 2023 as a Pain Medicine (Anesthesiology) Physician in SANTA ANA, California, prescribing 96% generic.

2K
Part D claims, 2023
96%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

KENNETH GRABOW, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,505 Top 19% higher than 81% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

KENNETH GRABOW, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about KENNETH GRABOW, MD?

Quality data not reported

NPI registry status

Active

Issued 08/10/2006

NPI 1629089529

Primary specialty

Pain Medicine (Anesthesiology) Physician

Niche

4,020 US NPIs in this specialty

Medicare Part D claims

1,505 9% vs specialty avg

2023 prescription claims

Specialty avg: 1,657

Specialty distribution in California

How Pain Medicine (Anesthesiology) Physician compares to other specialties among California providers

California providers

Pain Medicine (Anesthesiology) Physician share within California

1. Pain Medicine (Anesthesiology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pain Medicine (Anesthesiology) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Pain Medicine (Anesthesiology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pain Medicine (Anesthesiology) Physician ABMS/AOA estimate

Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

KENNETH GRABOW, MD appears in the CMS NPPES registry as a Pain Medicine (Anesthesiology) Physician provider holding MD credentials at 1200 N TUSTIN AVE, SANTA ANA, CA, 92705, with a listed phone of (714) 542-5999. NPI 1629089529 was issued on 08/10/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRABOW most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,505 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $62K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 48.5%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pain Medicine (Anesthesiology) Physician is a narrow specialty nationwide, with 4,020 enrolled providers across 53 states and an average of 1,657 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1200 N TUSTIN AVE
SANTA ANA, CA 92705

Provider Details

NPI 1629089529
Specialty Pain Medicine (Anesthesiology) Physician
Credentials MD
Gender Male
NPI Issued 08/10/2006

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to KENNETH GRABOW, MD. To verify KENNETH GRABOW, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

KENNETH GRABOW, MD — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 1,505 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,505
Total Claims
$62K
Total Drug Cost
168
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,732
Total Day Supply
50,562
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$16K
Generic Drug Cost
$46K
Opioid Claims
730 (48.5% rate)

Patient Demographics

Average Patient Age
67.8 years
Avg HCC Risk Score
1.34
Gender Split
55% female / 45% male
Age Distribution
<65: 58, 65-74: 70, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What KENNETH GRABOW, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
396
Gabapentin
218
Tizanidine Hcl
118
Oxycodone Hcl
75
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
63
Morphine Sulfate Er
Morphine Sulfate
56
Duloxetine Hcl
51
Tramadol Hcl
41
Omeprazole
40
Morphine Sulfate
37

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Pain Medicine (Anesthesiology) Physician Overview

How KENNETH GRABOW, MD fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.

4,020
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider

KENNETH GRABOW, MD's 1,505 claims are below the specialty average of 1,657.

Nearby Pain Medicine (Anesthesiology) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as GRABOW.

Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KENNETH GRABOW, MD's specialty?
KENNETH GRABOW, MD specializes in Pain Medicine (Anesthesiology) Physician and practices in SANTA ANA, California. Credentials: MD.
How much does KENNETH GRABOW, MD prescribe under Medicare Part D?
In 2023, KENNETH GRABOW, MD wrote 1,505 Medicare Part D claims totaling $62K in drug costs for 168 beneficiaries.
Where is KENNETH GRABOW, MD located?
KENNETH GRABOW, MD is located at 1200 N TUSTIN AVE, SANTA ANA, CA, 92705. Phone: (714) 542-5999.
What is KENNETH GRABOW, MD's NPI number?
KENNETH GRABOW, MD's National Provider Identifier (NPI) is 1629089529, issued on 08/10/2006.
Does KENNETH GRABOW, MD prescribe more brand-name or generic drugs?
KENNETH GRABOW, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $16K in brand drug costs.
Does KENNETH GRABOW, MD prescribe opioids?
Yes, KENNETH GRABOW, MD had 730 opioid claims in 2023 with an opioid prescribing rate of 48.5%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US?
There are 4,020 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does KENNETH GRABOW, MD prescribe most often?
Based on 2023 Medicare Part D data, KENNETH GRABOW, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Tizanidine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KENNETH GRABOW, MD accept Medicare?
KENNETH GRABOW, MD appears in CMS Medicare data with 1,505 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KENNETH GRABOW, MD's credentials?
KENNETH GRABOW, MD's NPI is 1629089529 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology